#4251BA
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(48.4% 0.165 272.5), rgb(66, 81, 186).
Aa
White text reads best on this color (6.73:1).
About this color
#4251BA is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.165 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.052 away. White text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 3.11:1 |
| White text | 6.73:1 |
Values
| HEX | #4251BA |
| RGB | rgb(66, 81, 186) |
| HSL | hsl(233, 48%, 49%) |
| OKLCH | oklch(48.4% 0.165 272.5) |
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 #4251BA | 6.73:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #4251BA | 3.11:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #4251BA text on white | 6.73:1 | AA | Lc 82.8 | Fine for body text |
| #4251BA text on black | 3.11:1 | AA large text | Lc -19.1 | 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 700.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F7
oklch(88.5% 0.044 272.7)
-
Step 300
300
#AFBEF5
oklch(80.9% 0.08 272.7)
-
Step 400
400
#869AF0
oklch(70.7% 0.128 272.8)
-
Step 500
500
#697FEB
oklch(63.1% 0.163 272.3)
-
Step 600
600
#5365D9
oklch(55.6% 0.177 272.6)
-
Step 700
700 (this color)
#4251BA
oklch(48.4% 0.165 272.5)
-
Step 800
800
#384598
oklch(42.8% 0.136 272.6)
-
Step 900
900
#2F3B79
oklch(37.7% 0.106 272.1)
-
Step 950
950
#1C2347
oklch(27.1% 0.067 272.9)
#4251BA 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) | #0061BE | 0.053 |
| Deuteranopia (no green cones) | #0056B8 | 0.046 |
| Tritanopia (no blue cones) | #006A7D | 0.138 |
| Achromatopsia (no color) | #5C5C5C | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4251BA
#4251BA
oklch(48.4% 0.165 272.5)
- #725C00
#725C00
oklch(48.3% 0.099 92.6)
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 #4251BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue With A Hint Of Purple #533CC6 ΔE 0.052
- Iris #6258C4 ΔE 0.053
- Warm Blue #4B57DB ΔE 0.055
- Blue Blue #2242C7 ΔE 0.057
- Bluey Purple #6241C7 ΔE 0.059
- Blurple #5539CC ΔE 0.060
- Majorelle Blue #3F37C9 ΔE 0.061
- Blueberry #464196 ΔE 0.067
Use #4251BA 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.