#4253BC
Closest named color: Iris (#6258C4). oklch(48.9% 0.165 271.9), rgb(66, 83, 188).
Aa
White text reads best on this color (6.57:1).
About this color
#4253BC is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.165 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.050 away. White text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #4253BC |
| RGB | rgb(66, 83, 188) |
| HSL | hsl(232, 48%, 50%) |
| OKLCH | oklch(48.9% 0.165 271.9) |
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 #4253BC | 6.57:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #4253BC | 3.19:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #4253BC text on white | 6.57:1 | AA | Lc 82.2 | Fine for body text |
| #4253BC text on black | 3.19:1 | AA large text | Lc -19.7 | 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
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#AEBEF5
oklch(80.9% 0.08 271.9)
-
Step 400
400
#859BF0
oklch(70.8% 0.127 271.8)
-
Step 500
500
#687FEB
oklch(63.1% 0.163 271.9)
-
Step 600
600
#5166D9
oklch(55.6% 0.177 271.7)
-
Step 700
700 (this color)
#4253BC
oklch(48.9% 0.165 271.9)
-
Step 800
800
#364599
oklch(42.7% 0.138 271.7)
-
Step 900
900
#2F3B79
oklch(37.7% 0.106 272.1)
-
Step 950
950
#1B2347
oklch(27% 0.068 271.8)
#4253BC 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) | #0063C0 | 0.052 |
| Deuteranopia (no green cones) | #0058BA | 0.045 |
| Tritanopia (no blue cones) | #006C7F | 0.138 |
| Achromatopsia (no color) | #5D5D5D | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4253BC
#4253BC
oklch(48.9% 0.165 271.9)
- #755E00
#755E00
oklch(49.1% 0.1 92.1)
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 #4253BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.050
- Warm Blue #4B57DB ΔE 0.051
- Blue With A Hint Of Purple #533CC6 ΔE 0.055
- Blue Blue #2242C7 ΔE 0.059
- Bluey Purple #6241C7 ΔE 0.060
- Blurple #5539CC ΔE 0.063
- Majorelle Blue #3F37C9 ΔE 0.064
- Mid Blue #276AB3 ΔE 0.065
Use #4253BC 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.