#515FA0
Closest named color: Dusky Blue (#475F94). oklch(50.4% 0.105 272.9), rgb(81, 95, 160).
Aa
White text reads best on this color (6.00:1).
About this color
#515FA0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.105 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.024 away. White text reads best on it, at 6.00:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.49:1 |
| White text | 6.00:1 |
Values
| HEX | #515FA0 |
| RGB | rgb(81, 95, 160) |
| HSL | hsl(229, 33%, 47%) |
| OKLCH | oklch(50.4% 0.105 272.9) |
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 #515FA0 | 6.00:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #515FA0 | 3.49:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #515FA0 text on white | 6.00:1 | AA | Lc 79.9 | Fine for body text |
| #515FA0 text on black | 3.49:1 | AA large text | Lc -21.9 | 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 700.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D8EC
oklch(88.4% 0.028 274.6)
-
Step 300
300
#B5BFE2
oklch(80.8% 0.051 272.7)
-
Step 400
400
#909ED4
oklch(70.8% 0.081 273)
-
Step 500
500
#7585C8
oklch(63.2% 0.103 272.9)
-
Step 600
600
#5E6DB5
oklch(55.5% 0.113 273.3)
-
Step 700
700 (this color)
#515FA0
oklch(50.4% 0.105 272.9)
-
Step 800
800
#3F4B7E
oklch(42.7% 0.086 272.3)
-
Step 900
900
#363F65
oklch(37.8% 0.066 272.7)
-
Step 950
950
#1F253B
oklch(27% 0.042 271.7)
#515FA0 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) | #4667A3 | 0.024 |
| Deuteranopia (no green cones) | #3E609F | 0.023 |
| Tritanopia (no blue cones) | #326D78 | 0.093 |
| Achromatopsia (no color) | #636363 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515FA0
#515FA0
oklch(50.4% 0.105 272.9)
- #796200
#796200
oklch(50.4% 0.103 92.8)
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 #515FA0, closest first.
No curated palette has a color within ΔE 0.04 of #515FA0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.024
- French Blue #436BAD ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.039
- Denim #3B638C ΔE 0.046
- Twilight #4E518B ΔE 0.048
- Mid Blue #276AB3 ΔE 0.052
- Dusk #4E5481 ΔE 0.054
- Muted Blue #3B719F ΔE 0.054
Use #515FA0 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.