#5251BE
Closest named color: Iris (#6258C4). oklch(49.8% 0.167 278.9), rgb(82, 81, 190).
Aa
White text reads best on this color (6.40:1).
About this color
#5251BE is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.167 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.032 away. White text reads best on it, at 6.40:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #5251BE |
| RGB | rgb(82, 81, 190) |
| HSL | hsl(241, 46%, 53%) |
| OKLCH | oklch(49.8% 0.167 278.9) |
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 #5251BE | 6.40:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #5251BE | 3.27:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #5251BE text on white | 6.40:1 | AA | Lc 81.5 | Fine for body text |
| #5251BE text on black | 3.27:1 | AA large text | Lc -20.4 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D2D7F7
oklch(88.5% 0.044 278.4)
-
Step 300
300
#B5BCF5
oklch(81% 0.081 279)
-
Step 400
400
#9097F0
oklch(70.8% 0.13 279.1)
-
Step 500
500
#767AEA
oklch(63% 0.165 279)
-
Step 600
600
#6161D8
oklch(55.7% 0.178 278.9)
-
Step 700
700 (this color)
#5251BE
oklch(49.8% 0.167 278.9)
-
Step 800
800
#414198
oklch(42.6% 0.139 278.7)
-
Step 900
900
#373879
oklch(37.7% 0.108 279.2)
-
Step 950
950
#202247
oklch(27.1% 0.068 278.5)
#5251BE 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) | #0063C2 | 0.070 |
| Deuteranopia (no green cones) | #005ABC | 0.066 |
| Tritanopia (no blue cones) | #156B7F | 0.146 |
| Achromatopsia (no color) | #5F5F5F | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5251BE
#5251BE
oklch(49.8% 0.167 278.9)
- #726300
#726300
oklch(49.9% 0.103 98.9)
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 #5251BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.032
- Bluey Purple #6241C7 ΔE 0.043
- Blue With A Hint Of Purple #533CC6 ΔE 0.047
- Warm Blue #4B57DB ΔE 0.047
- Slate Blue #6A5ACD ΔE 0.050
- Blurple #5539CC ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.055
Use #5251BE 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.