#5153C6
Closest named color: Iris (#6258C4). oklch(50.7% 0.175 277.4), rgb(81, 83, 198).
Aa
White text reads best on this color (6.17:1).
About this color
#5153C6 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.175 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.030 away. White text reads best on it, at 6.17:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.40:1 |
| White text | 6.17:1 |
Values
| HEX | #5153C6 |
| RGB | rgb(81, 83, 198) |
| HSL | hsl(239, 51%, 55%) |
| OKLCH | oklch(50.7% 0.175 277.4) |
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 #5153C6 | 6.17:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #5153C6 | 3.40:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #5153C6 text on white | 6.17:1 | AA | Lc 80.4 | Fine for body text |
| #5153C6 text on black | 3.40:1 | AA large text | Lc -21.4 | 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 700.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D1D7F9
oklch(88.5% 0.047 277.5)
-
Step 300
300
#B3BCF7
oklch(80.9% 0.084 277.6)
-
Step 400
400
#8C97F4
oklch(70.7% 0.136 277.2)
-
Step 500
500
#727AEF
oklch(63% 0.173 277.3)
-
Step 600
600
#5D60DE
oklch(55.7% 0.188 277.4)
-
Step 700
700 (this color)
#5153C6
oklch(50.7% 0.175 277.4)
-
Step 800
800
#3F419C
oklch(42.8% 0.145 277.4)
-
Step 900
900
#35387C
oklch(37.7% 0.113 277.6)
-
Step 950
950
#1F2149
oklch(27% 0.073 278.2)
#5153C6 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) | #0066CA | 0.068 |
| Deuteranopia (no green cones) | #005CC4 | 0.063 |
| Tritanopia (no blue cones) | #006E84 | 0.151 |
| Achromatopsia (no color) | #616161 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5153C6
#5153C6
oklch(50.7% 0.175 277.4)
- #766500
#766500
oklch(50.8% 0.105 97.6)
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 #5153C6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.030
- Warm Blue #4B57DB ΔE 0.034
- Bluey Purple #6241C7 ΔE 0.044
- Slate Blue #6A5ACD ΔE 0.044
- Dark Periwinkle #665FD1 ΔE 0.048
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Light Indigo #6D5ACF ΔE 0.050
- Blurple #5539CC ΔE 0.054
Use #5153C6 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.