#5B809C
Closest named color: Stormy Blue (#507B9C). oklch(58.3% 0.06 241.7), rgb(91, 128, 156).
Aa
Black text reads best on this color (5.01:1).
About this color
#5B809C is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.060 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.021 away. Black text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #5B809C |
| RGB | rgb(91, 128, 156) |
| HSL | hsl(206, 26%, 48%) |
| OKLCH | oklch(58.3% 0.06 241.7) |
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 #5B809C | 4.18:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #5B809C | 5.01:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #5B809C text on white | 4.18:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #5B809C text on black | 5.01:1 | AA | Lc -32.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B2C3D1
oklch(80.9% 0.027 242.8)
-
Step 400
400
#89A5BA
oklch(70.8% 0.044 240.7)
-
Step 500
500
#6C8EA8
oklch(63.1% 0.055 241.6)
-
Step 600
600 (this color)
#5B809C
oklch(58.3% 0.06 241.7)
-
Step 700
700
#44657E
oklch(49.2% 0.056 241.9)
-
Step 800
800
#385266
oklch(42.6% 0.046 242.2)
-
Step 900
900
#304453
oklch(37.6% 0.036 241.3)
-
Step 950
950
#1D2831
oklch(27.1% 0.023 243.4)
#5B809C 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) | #74809D | 0.032 |
| Deuteranopia (no green cones) | #6B799C | 0.027 |
| Tritanopia (no blue cones) | #438789 | 0.049 |
| Achromatopsia (no color) | #7C7C7C | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B809C
#5B809C
oklch(58.3% 0.06 241.7)
- #957356
#957356
oklch(58.2% 0.06 61.7)
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 #5B809C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.021
- Grey Blue #647D8E ΔE 0.022
- Off Blue #5684AE ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.027
- Cerulean #457B9D ΔE 0.030
- Slate Gray #708090 ΔE 0.031
- Battleship Grey #6B7C85 ΔE 0.037
- Steel #738595 ΔE 0.037
Use #5B809C 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.