#5B76B3
Closest named color: Steel Blue (#4682B4). oklch(57.2% 0.1 265.2), rgb(91, 118, 179).
Aa
Black text reads best on this color (4.68:1).
About this color
#5B76B3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.100 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.038 away. Black text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #5B76B3 |
| RGB | rgb(91, 118, 179) |
| HSL | hsl(222, 37%, 53%) |
| OKLCH | oklch(57.2% 0.1 265.2) |
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 #5B76B3 | 4.48:1 | AA large text | Lc -76.5 | Fine for body text |
| Black text on #5B76B3 | 4.68:1 | AA | Lc 33.1 | Non-text elements, placeholder text |
| #5B76B3 text on white | 4.48:1 | AA large text | Lc 71.0 | Content text, not long reading |
| #5B76B3 text on black | 4.68:1 | AA | Lc -30.7 | 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 600.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B3C1DF
oklch(81% 0.045 265.5)
-
Step 400
400
#8BA0CE
oklch(70.6% 0.072 265.5)
-
Step 500
500
#6E88C2
oklch(63% 0.093 265.3)
-
Step 600
600 (this color)
#5B76B3
oklch(57.2% 0.1 265.2)
-
Step 700
700
#475F96
oklch(49.2% 0.093 265.3)
-
Step 800
800
#3A4E79
oklch(42.8% 0.076 264.4)
-
Step 900
900
#324162
oklch(37.8% 0.06 265)
-
Step 950
950
#1D2639
oklch(27% 0.038 264.5)
#5B76B3 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) | #5F7BB6 | 0.015 |
| Deuteranopia (no green cones) | #5573B2 | 0.012 |
| Tritanopia (no blue cones) | #36838C | 0.090 |
| Achromatopsia (no color) | #777777 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B76B3
#5B76B3
oklch(57.2% 0.1 265.2)
- #937327
#937327
oklch(57.3% 0.1 85.3)
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 #5B76B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.038
- Windows Blue #3778BF ΔE 0.038
- Cool Blue #4984B8 ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.040
- Off Blue #5684AE ΔE 0.042
- Dull Blue #49759C ΔE 0.043
- French Blue #436BAD ΔE 0.045
- Stormy Blue #507B9C ΔE 0.045
Use #5B76B3 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.