#4253C9
Closest named color: Warm Blue (#4B57DB). oklch(50% 0.183 271.8), rgb(66, 83, 201).
Aa
White text reads best on this color (6.33:1).
About this color
#4253C9 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.183 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.032 away. White text reads best on it, at 6.33:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #4253C9 |
| RGB | rgb(66, 83, 201) |
| HSL | hsl(232, 56%, 52%) |
| OKLCH | oklch(50% 0.183 271.8) |
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 #4253C9 | 6.33:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #4253C9 | 3.31:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #4253C9 text on white | 6.33:1 | AA | Lc 81.1 | Fine for body text |
| #4253C9 text on black | 3.31:1 | AA large text | Lc -20.8 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ACBEFB
oklch(81% 0.089 271.6)
-
Step 400
400
#8299F8
oklch(70.6% 0.141 272.1)
-
Step 500
500
#657DF5
oklch(63.2% 0.18 271.8)
-
Step 600
600
#4E62E4
oklch(55.5% 0.197 271.8)
-
Step 700
700 (this color)
#4253C9
oklch(50% 0.183 271.8)
-
Step 800
800
#3443A0
oklch(42.7% 0.151 271.5)
-
Step 900
900
#2D3A7F
oklch(37.8% 0.117 271.7)
-
Step 950
950
#1A224A
oklch(26.9% 0.075 272)
#4253C9 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) | #0066CD | 0.055 |
| Deuteranopia (no green cones) | #005AC7 | 0.044 |
| Tritanopia (no blue cones) | #007086 | 0.149 |
| Achromatopsia (no color) | #5F5F5F | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4253C9
#4253C9
oklch(50% 0.183 271.8)
- #786000
#786000
oklch(49.9% 0.102 91.7)
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 #4253C9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.032
- Iris #6258C4 ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.051
- Blurple #5539CC ΔE 0.056
- Bluey Purple #6241C7 ΔE 0.057
- Blue Blue #2242C7 ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.060
- Slate Blue #6A5ACD ΔE 0.062
Use #4253C9 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.