#577199
Closest named color: Dull Blue (#49759C). oklch(54.5% 0.07 258.8), rgb(87, 113, 153).
Aa
White text reads best on this color (4.96:1).
About this color
#577199 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.070 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.018 away. White text reads best on it, at 4.96:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.22:1 |
| White text | 4.96:1 |
Values
| HEX | #577199 |
| RGB | rgb(87, 113, 153) |
| HSL | hsl(216, 27%, 47%) |
| OKLCH | oklch(54.5% 0.07 258.8) |
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 #577199 | 4.96:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #577199 | 4.22:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #577199 text on white | 4.96:1 | AA | Lc 74.3 | Content text, not long reading |
| #577199 text on black | 4.22:1 | AA large text | Lc -27.4 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B5C2D5
oklch(81% 0.03 257.8)
-
Step 400
400
#8EA2C1
oklch(70.8% 0.051 259.1)
-
Step 500
500
#728BB1
oklch(63.2% 0.064 258.6)
-
Step 600
600 (this color)
#577199
oklch(54.5% 0.07 258.8)
-
Step 700
700
#4A6286
oklch(49.2% 0.065 258.3)
-
Step 800
800
#3D506D
oklch(42.8% 0.054 258.7)
-
Step 900
900
#344258
oklch(37.6% 0.042 259.3)
-
Step 950
950
#1F2734
oklch(27.1% 0.027 260)
#577199 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) | #62739B | 0.016 |
| Deuteranopia (no green cones) | #5B6D98 | 0.012 |
| Tritanopia (no blue cones) | #3F7A7F | 0.063 |
| Achromatopsia (no color) | #707070 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577199
#577199
oklch(54.5% 0.07 258.8)
- #866B3F
#866B3F
oklch(54.4% 0.07 78.7)
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 #577199, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.018
- Metallic Blue #4F738E ΔE 0.023
- Stormy Blue #507B9C ΔE 0.028
- Muted Blue #3B719F ΔE 0.031
- Cerulean #457B9D ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.035
- French Blue #436BAD ΔE 0.046
- Grey Blue #647D8E ΔE 0.048
Use #577199 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.