#57809F
Closest named color: Stormy Blue (#507B9C). oklch(58.2% 0.066 241.9), rgb(87, 128, 159).
Aa
Black text reads best on this color (4.99:1).
About this color
#57809F is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.066 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.017 away. Black text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.99:1 |
| White text | 4.20:1 |
Values
| HEX | #57809F |
| RGB | rgb(87, 128, 159) |
| HSL | hsl(206, 29%, 48%) |
| OKLCH | oklch(58.2% 0.066 241.9) |
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 #57809F | 4.20:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #57809F | 4.99:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #57809F text on white | 4.20:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #57809F text on black | 4.99:1 | AA | Lc -32.7 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B1C3D3
oklch(80.9% 0.03 245)
-
Step 400
400
#87A5BC
oklch(70.7% 0.047 241.4)
-
Step 500
500
#698EAB
oklch(63% 0.06 242.5)
-
Step 600
600 (this color)
#57809F
oklch(58.2% 0.066 241.9)
-
Step 700
700
#406581
oklch(49.1% 0.062 242.2)
-
Step 800
800
#355369
oklch(42.8% 0.051 241.2)
-
Step 900
900
#2E4455
oklch(37.6% 0.04 242.3)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#57809F 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) | #7380A1 | 0.036 |
| Deuteranopia (no green cones) | #69789E | 0.030 |
| Tritanopia (no blue cones) | #39888A | 0.055 |
| Achromatopsia (no color) | #7B7B7B | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57809F
#57809F
oklch(58.2% 0.066 241.9)
- #987252
#987252
oklch(58.2% 0.066 61.1)
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 #57809F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.017
- Off Blue #5684AE ΔE 0.023
- Dusty Blue #5A86AD ΔE 0.025
- Cerulean #457B9D ΔE 0.026
- Grey Blue #647D8E ΔE 0.028
- Steel Blue #4682B4 ΔE 0.034
- Slate Gray #708090 ΔE 0.037
- Dull Blue #49759C ΔE 0.037
Use #57809F 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.