#4253AB
Closest named color: Denim Blue (#3B5B92). oklch(47.7% 0.141 271.8), rgb(66, 83, 171).
Aa
White text reads best on this color (6.86:1).
About this color
#4253AB is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.141 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.050 away. White text reads best on it, at 6.86:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.05:1 |
| White text | 6.86:1 |
Values
| HEX | #4253AB |
| RGB | rgb(66, 83, 171) |
| HSL | hsl(230, 44%, 46%) |
| OKLCH | oklch(47.7% 0.141 271.8) |
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 #4253AB | 6.86:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #4253AB | 3.05:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #4253AB text on white | 6.86:1 | AA | Lc 83.5 | Fine for body text |
| #4253AB text on black | 3.05:1 | AA large text | Lc -18.5 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B1BFEE
oklch(81% 0.068 271.9)
-
Step 400
400
#889CE5
oklch(70.6% 0.11 271.7)
-
Step 500
500
#6C82DD
oklch(63.1% 0.139 271.7)
-
Step 600
600
#5569CB
oklch(55.5% 0.152 271.9)
-
Step 700
700 (this color)
#4253AB
oklch(47.7% 0.141 271.8)
-
Step 800
800
#39488E
oklch(42.7% 0.117 271.6)
-
Step 900
900
#313D72
oklch(37.8% 0.092 271.8)
-
Step 950
950
#1D2442
oklch(27% 0.057 272.2)
#4253AB 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) | #225FAE | 0.040 |
| Deuteranopia (no green cones) | #0556A9 | 0.046 |
| Tritanopia (no blue cones) | #006777 | 0.121 |
| Achromatopsia (no color) | #5A5A5A | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4253AB
#4253AB
oklch(47.7% 0.141 271.8)
- #715A00
#715A00
oklch(47.7% 0.098 91.4)
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 #4253AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.050
- Twilight #4E518B ΔE 0.053
- Blueberry #464196 ΔE 0.054
- Dusky Blue #475F94 ΔE 0.055
- Dusk Blue #26538D ΔE 0.059
- Mid Blue #276AB3 ΔE 0.062
- Iris #6258C4 ΔE 0.063
- French Blue #436BAD ΔE 0.066
Use #4253AB 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.