#57809E
Closest named color: Stormy Blue (#507B9C). oklch(58.2% 0.065 241), rgb(87, 128, 158).
Aa
Black text reads best on this color (4.98:1).
About this color
#57809E is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.065 and its hue 241°. 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 4.98:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #57809E |
| RGB | rgb(87, 128, 158) |
| HSL | hsl(205, 29%, 48%) |
| OKLCH | oklch(58.2% 0.065 241) |
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 #57809E | 4.21:1 | AA large text | Lc -74.5 | Content text, not long reading |
| Black text on #57809E | 4.98:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #57809E text on white | 4.21:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #57809E text on black | 4.98:1 | 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
#B1C4D2
oklch(81% 0.029 239.7)
-
Step 400
400
#87A5BB
oklch(70.7% 0.046 240.1)
-
Step 500
500
#698FAB
oklch(63.2% 0.06 240.8)
-
Step 600
600 (this color)
#57809E
oklch(58.2% 0.065 241)
-
Step 700
700
#406580
oklch(49% 0.061 241.2)
-
Step 800
800
#355368
oklch(42.8% 0.05 240)
-
Step 900
900
#2F4455
oklch(37.6% 0.039 243.5)
-
Step 950
950
#1B2831
oklch(26.9% 0.025 239.1)
#57809E 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) | #73809F | 0.035 |
| Deuteranopia (no green cones) | #6A789D | 0.031 |
| Tritanopia (no blue cones) | #3A878A | 0.052 |
| Achromatopsia (no color) | #7B7B7B | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57809E
#57809E
oklch(58.2% 0.065 241)
- #977253
#977253
oklch(58.1% 0.064 61)
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 #57809E, 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 0.025
- Cerulean #457B9D ΔE 0.026
- Dusty Blue #5A86AD ΔE 0.026
- Grey Blue #647D8E ΔE 0.027
- Steel Blue #4682B4 ΔE 0.036
- Slate Gray #708090 ΔE 0.036
- Dull Blue #49759C ΔE 0.038
Use #57809E 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.