#577994
Closest named color: Stormy Blue (#507B9C). oklch(56.1% 0.057 242.9), rgb(87, 121, 148).
Aa
White text reads best on this color (4.59:1).
About this color
#577994 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.057 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.014 away. White text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.56:1 |
| White text | 4.59:1 |
Values
| HEX | #577994 |
| RGB | rgb(87, 121, 148) |
| HSL | hsl(207, 26%, 46%) |
| OKLCH | oklch(56.1% 0.057 242.9) |
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 #577994 | 4.59:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #577994 | 4.56:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #577994 text on white | 4.59:1 | AA | Lc 71.9 | Content text, not long reading |
| #577994 text on black | 4.56:1 | AA | Lc -29.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D1DAE2
oklch(88.4% 0.015 244.7)
-
Step 300
300
#B3C3D0
oklch(80.9% 0.025 242.4)
-
Step 400
400
#8BA4B9
oklch(70.7% 0.042 243.7)
-
Step 500
500
#6E8EA7
oklch(63.2% 0.052 242.1)
-
Step 600
600 (this color)
#577994
oklch(56.1% 0.057 242.9)
-
Step 700
700
#46647D
oklch(49% 0.054 244.3)
-
Step 800
800
#3A5265
oklch(42.7% 0.043 242.8)
-
Step 900
900
#324453
oklch(37.8% 0.035 244)
-
Step 950
950
#1D2830
oklch(27% 0.021 240.1)
#577994 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) | #6E7995 | 0.030 |
| Deuteranopia (no green cones) | #667294 | 0.026 |
| Tritanopia (no blue cones) | #408082 | 0.048 |
| Achromatopsia (no color) | #757575 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577994
#577994
oklch(56.1% 0.057 242.9)
- #8D6E51
#8D6E51
oklch(56.1% 0.058 64.3)
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 #577994, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.014
- Cerulean #457B9D ΔE 0.022
- Metallic Blue #4F738E ΔE 0.022
- Grey Blue #647D8E ΔE 0.024
- Dull Blue #49759C ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.037
- Battleship Gray #6C757D ΔE 0.041
- Slate Gray #708090 ΔE 0.041
Use #577994 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.