#577499
Closest named color: Dull Blue (#49759C). oklch(55.2% 0.067 254.8), rgb(87, 116, 153).
Aa
White text reads best on this color (4.81:1).
About this color
#577499 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.067 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.016 away. White text reads best on it, at 4.81:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.36:1 |
| White text | 4.81:1 |
Values
| HEX | #577499 |
| RGB | rgb(87, 116, 153) |
| HSL | hsl(214, 27%, 47%) |
| OKLCH | oklch(55.2% 0.067 254.8) |
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 #577499 | 4.81:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #577499 | 4.36:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #577499 text on white | 4.81:1 | AA | Lc 73.3 | Content text, not long reading |
| #577499 text on black | 4.36:1 | AA large text | Lc -28.4 | 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
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B4C2D4
oklch(80.9% 0.03 254.7)
-
Step 400
400
#8DA3BF
oklch(70.8% 0.048 254.6)
-
Step 500
500
#708CAF
oklch(63.2% 0.062 254.3)
-
Step 600
600 (this color)
#577499
oklch(55.2% 0.067 254.8)
-
Step 700
700
#486284
oklch(49% 0.063 255.4)
-
Step 800
800
#3B506B
oklch(42.6% 0.052 255)
-
Step 900
900
#334357
oklch(37.8% 0.04 254.3)
-
Step 950
950
#1E2733
oklch(27% 0.026 255.7)
#577499 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) | #66769B | 0.021 |
| Deuteranopia (no green cones) | #5E6F98 | 0.016 |
| Tritanopia (no blue cones) | #3F7C81 | 0.058 |
| Achromatopsia (no color) | #727272 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577499
#577499
oklch(55.2% 0.067 254.8)
- #896C44
#896C44
oklch(55% 0.067 74.6)
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 #577499, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.016
- Stormy Blue #507B9C ΔE 0.020
- Metallic Blue #4F738E ΔE 0.021
- Cerulean #457B9D ΔE 0.025
- Muted Blue #3B719F ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.037
- Grey Blue #647D8E ΔE 0.040
- Off Blue #5684AE ΔE 0.049
Use #577499 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.