#538FAB
Closest named color: Dusty Blue (#5A86AD). oklch(62% 0.075 229.8), rgb(83, 143, 171).
Aa
Black text reads best on this color (5.88:1).
About this color
#538FAB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.075 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.027 away. Black text reads best on it, at 5.88:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.88:1 |
| White text | 3.56:1 |
Values
| HEX | #538FAB |
| RGB | rgb(83, 143, 171) |
| HSL | hsl(199, 35%, 50%) |
| OKLCH | oklch(62% 0.075 229.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #538FAB | 3.56:1 | AA large text | Lc -68.6 | Content text, not long reading |
| Black text on #538FAB | 5.88:1 | AA | Lc 40.9 | Non-text elements, placeholder text |
| #538FAB text on white | 3.56:1 | AA large text | Lc 63.1 | Content text, not long reading |
| #538FAB text on black | 5.88:1 | AA | Lc -38.5 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE4
oklch(88.5% 0.02 229.1)
-
Step 300
300
#A9C6D4
oklch(81% 0.037 228.5)
-
Step 400
400
#7AA8BF
oklch(70.7% 0.06 230.3)
-
Step 500
500 (this color)
#538FAB
oklch(62% 0.075 229.8)
-
Step 600
600
#397C9A
oklch(55.6% 0.082 230)
-
Step 700
700
#2B6984
oklch(49.2% 0.076 229.8)
-
Step 800
800
#25556B
oklch(42.6% 0.063 230.6)
-
Step 900
900
#234757
oklch(37.8% 0.05 229)
-
Step 950
950
#152933
oklch(26.9% 0.032 231.4)
#538FAB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #818DAC | 0.054 |
| Deuteranopia (no green cones) | #7483AB | 0.048 |
| Tritanopia (no blue cones) | #209798 | 0.055 |
| Achromatopsia (no color) | #888888 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538FAB
#538FAB
oklch(62% 0.075 229.8)
- #AC795D
#AC795D
oklch(62.1% 0.076 49.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #538FAB
These curated palettes and gradients contain exactly #538FAB. Open one to see the full color scheme around it.
Gradients
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.027
- Off Blue #5684AE ΔE 0.034
- Faded Blue #658CBB ΔE 0.035
- Blue Grey #758DA3 ΔE 0.038
- Silver Lake Blue #778DA9 ΔE 0.040
- Cool Blue #4984B8 ΔE 0.044
- Light Slate Gray #778899 ΔE 0.046
- Blue NCS #118AB2 ΔE 0.046
Use #538FAB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.