#5751DA
Closest named color: Warm Blue (#4B57DB). oklch(52.4% 0.202 278.7), rgb(87, 81, 218).
Aa
White text reads best on this color (5.84:1).
About this color
#5751DA is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.202 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.019 away. White text reads best on it, at 5.84:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.202) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.59:1 |
| White text | 5.84:1 |
Values
| HEX | #5751DA |
| RGB | rgb(87, 81, 218) |
| HSL | hsl(243, 65%, 59%) |
| OKLCH | oklch(52.4% 0.202 278.7) |
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 #5751DA | 5.84:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #5751DA | 3.59:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #5751DA text on white | 5.84:1 | AA | Lc 78.7 | Fine for body text |
| #5751DA text on black | 3.59:1 | AA large text | Lc -23.1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D1D6FB
oklch(88.4% 0.051 279.2)
-
Step 300
300
#B3BBFB
oklch(80.9% 0.091 278.6)
-
Step 400
400
#8E95F9
oklch(70.7% 0.145 279)
-
Step 500
500
#7477F6
oklch(63.1% 0.186 278.6)
-
Step 600
600 (this color)
#5751DA
oklch(52.4% 0.202 278.7)
-
Step 700
700
#4F4AC7
oklch(49% 0.188 278.7)
-
Step 800
800
#413EA1
oklch(42.8% 0.155 278.9)
-
Step 900
900
#363680
oklch(37.7% 0.122 278.8)
-
Step 950
950
#1F204B
oklch(26.9% 0.078 278.8)
#5751DA 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) | #006ADE | 0.077 |
| Deuteranopia (no green cones) | #005FD7 | 0.070 |
| Tritanopia (no blue cones) | #00738E | 0.171 |
| Achromatopsia (no color) | #656565 | 0.203 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5751DA
#5751DA
oklch(52.4% 0.202 278.7)
- #7A6A00
#7A6A00
oklch(52.4% 0.108 98.8)
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 #5751DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.019
- Iris #6258C4 ΔE 0.043
- Slate Blue #6A5ACD ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.044
- Light Indigo #6D5ACF ΔE 0.046
- Bluey Purple #6241C7 ΔE 0.046
- Neon Blue #4361EE ΔE 0.049
- Blurple #5539CC ΔE 0.053
Use #5751DA 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.