#5153A9
Closest named color: Twilight (#4E518B). oklch(48.6% 0.135 279.1), rgb(81, 83, 169).
Aa
White text reads best on this color (6.64:1).
About this color
#5153A9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.135 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.049 away. White text reads best on it, at 6.64:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.16:1 |
| White text | 6.64:1 |
Values
| HEX | #5153A9 |
| RGB | rgb(81, 83, 169) |
| HSL | hsl(239, 35%, 49%) |
| OKLCH | oklch(48.6% 0.135 279.1) |
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 #5153A9 | 6.64:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #5153A9 | 3.16:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #5153A9 text on white | 6.64:1 | AA | Lc 82.6 | Fine for body text |
| #5153A9 text on black | 3.16:1 | AA large text | Lc -19.3 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D3D7F1
oklch(88.4% 0.036 278.7)
-
Step 300
300
#B7BDEB
oklch(80.9% 0.065 279)
-
Step 400
400
#939AE1
oklch(70.8% 0.104 279.1)
-
Step 500
500
#797FD8
oklch(63.1% 0.133 278.9)
-
Step 600
600
#6366C6
oklch(55.5% 0.146 279.2)
-
Step 700
700 (this color)
#5153A9
oklch(48.6% 0.135 279.1)
-
Step 800
800
#43468A
oklch(42.7% 0.111 278.7)
-
Step 900
900
#383B6F
oklch(37.7% 0.088 278.8)
-
Step 950
950
#212341
oklch(27% 0.055 279.1)
#5153A9 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) | #2960AC | 0.052 |
| Deuteranopia (no green cones) | #2059A7 | 0.054 |
| Tritanopia (no blue cones) | #2D6676 | 0.117 |
| Achromatopsia (no color) | #5C5C5C | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5153A9
#5153A9
oklch(48.6% 0.135 279.1)
- #6E5F00
#6E5F00
oklch(48.5% 0.1 98.5)
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 #5153A9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.049
- Iris #6258C4 ΔE 0.051
- Dusky Blue #475F94 ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.054
- Blueberry #464196 ΔE 0.057
- French Blue #436BAD ΔE 0.064
- Dusk #4E5481 ΔE 0.066
- Bluey Purple #6241C7 ΔE 0.067
Use #5153A9 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.