#538FA5
Closest named color: Dusty Blue (#5A86AD). oklch(61.8% 0.071 223.7), rgb(83, 143, 165).
Aa
Black text reads best on this color (5.84:1).
About this color
#538FA5 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.071 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.033 away. Black text reads best on it, at 5.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.84:1 |
| White text | 3.59:1 |
Values
| HEX | #538FA5 |
| RGB | rgb(83, 143, 165) |
| HSL | hsl(196, 33%, 49%) |
| OKLCH | oklch(61.8% 0.071 223.7) |
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 #538FA5 | 3.59:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #538FA5 | 5.84:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #538FA5 text on white | 3.59:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #538FA5 text on black | 5.84:1 | AA | Lc -38.2 | 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
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#AAC6D1
oklch(80.9% 0.034 223.5)
-
Step 400
400
#7BA9BA
oklch(70.8% 0.055 222.8)
-
Step 500
500 (this color)
#538FA5
oklch(61.8% 0.071 223.7)
-
Step 600
600
#3A7D94
oklch(55.6% 0.076 223.3)
-
Step 700
700
#2B697F
oklch(49% 0.072 224.6)
-
Step 800
800
#255667
oklch(42.7% 0.059 223.7)
-
Step 900
900
#244754
oklch(37.7% 0.046 224.4)
-
Step 950
950
#162A31
oklch(27.1% 0.029 222.4)
#538FA5 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) | #838CA6 | 0.057 |
| Deuteranopia (no green cones) | #7683A5 | 0.050 |
| Tritanopia (no blue cones) | #279696 | 0.048 |
| Achromatopsia (no color) | #878787 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538FA5
#538FA5
oklch(61.8% 0.071 223.7)
- #AA7863
#AA7863
oklch(61.8% 0.07 43.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #538FA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.033
- Blue Grey #758DA3 ΔE 0.038
- Off Blue #5684AE ΔE 0.039
- Silver Lake Blue #778DA9 ΔE 0.042
- Light Slate Gray #778899 ΔE 0.043
- Faded Blue #658CBB ΔE 0.043
- Steel #738595 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.049
Use #538FA5 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.