#538FBE
Closest named color: Faded Blue (#658CBB). oklch(62.9% 0.095 243.8), rgb(83, 143, 190).
Aa
Black text reads best on this color (6.04:1).
About this color
#538FBE is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.095 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.019 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #538FBE |
| RGB | rgb(83, 143, 190) |
| HSL | hsl(206, 45%, 54%) |
| OKLCH | oklch(62.9% 0.095 243.8) |
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 #538FBE | 3.47:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #538FBE | 6.04:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #538FBE text on white | 3.47:1 | AA large text | Lc 62.2 | Content text, not long reading |
| #538FBE text on black | 6.04:1 | AA | Lc -39.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A8C5DD
oklch(81% 0.046 243.3)
-
Step 400
400
#78A6CC
oklch(70.6% 0.075 244)
-
Step 500
500 (this color)
#538FBE
oklch(62.9% 0.095 243.8)
-
Step 600
600
#3679AB
oklch(55.6% 0.103 243.9)
-
Step 700
700
#286693
oklch(49.2% 0.096 243.7)
-
Step 800
800
#235377
oklch(42.7% 0.079 244)
-
Step 900
900
#224560
oklch(37.7% 0.062 243.8)
-
Step 950
950
#152838
oklch(26.9% 0.039 245.4)
#538FBE 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) | #7B90C0 | 0.046 |
| Deuteranopia (no green cones) | #6C85BD | 0.036 |
| Tritanopia (no blue cones) | #009A9F | 0.078 |
| Achromatopsia (no color) | #898989 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538FBE
#538FBE
oklch(62.9% 0.095 243.8)
- #B17C48
#B17C48
oklch(62.9% 0.095 64.1)
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 #538FBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.019
- Dusty Blue #5A86AD ΔE 0.031
- Cool Blue #4984B8 ΔE 0.034
- Off Blue #5684AE ΔE 0.034
- Steel Blue #4682B4 ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.048
- Blue NCS #118AB2 ΔE 0.049
- Blue Grey #758DA3 ΔE 0.052
Use #538FBE 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.