#577793
Closest named color: Stormy Blue (#507B9C). oklch(55.6% 0.057 245.5), rgb(87, 119, 147).
Aa
White text reads best on this color (4.70:1).
About this color
#577793 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.057 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.016 away. White text reads best on it, at 4.70:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.46:1 |
| White text | 4.70:1 |
Values
| HEX | #577793 |
| RGB | rgb(87, 119, 147) |
| HSL | hsl(208, 26%, 46%) |
| OKLCH | oklch(55.6% 0.057 245.5) |
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 #577793 | 4.70:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #577793 | 4.46:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #577793 text on white | 4.70:1 | AA | Lc 72.6 | Content text, not long reading |
| #577793 text on black | 4.46:1 | AA large text | Lc -29.1 | Dividers and decoration only |
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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B4C3D1
oklch(81% 0.026 246.3)
-
Step 400
400
#8CA4B9
oklch(70.7% 0.041 244.8)
-
Step 500
500
#6F8DA8
oklch(63% 0.053 245.9)
-
Step 600
600 (this color)
#577793
oklch(55.6% 0.057 245.5)
-
Step 700
700
#47647D
oklch(49.1% 0.053 245.2)
-
Step 800
800
#3B5266
oklch(42.8% 0.044 245.3)
-
Step 900
900
#324453
oklch(37.8% 0.035 244)
-
Step 950
950
#1E2831
oklch(27.1% 0.022 245.9)
#577793 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) | #6C7794 | 0.028 |
| Deuteranopia (no green cones) | #647192 | 0.022 |
| Tritanopia (no blue cones) | #417E80 | 0.049 |
| Achromatopsia (no color) | #747474 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577793
#577793
oklch(55.6% 0.057 245.5)
- #8B6D4F
#8B6D4F
oklch(55.7% 0.058 66.2)
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 #577793, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.016
- Metallic Blue #4F738E ΔE 0.017
- Dull Blue #49759C ΔE 0.023
- Cerulean #457B9D ΔE 0.023
- Grey Blue #647D8E ΔE 0.028
- Battleship Grey #6B7C85 ΔE 0.039
- Battleship Gray #6C757D ΔE 0.041
- Muted Blue #3B719F ΔE 0.043
Use #577793 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.