#425CB1
Closest named color: Mid Blue (#276AB3). oklch(49.9% 0.138 268.3), rgb(66, 92, 177).
Aa
White text reads best on this color (6.18:1).
About this color
#425CB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.138 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.041 away. White text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #425CB1 |
| RGB | rgb(66, 92, 177) |
| HSL | hsl(226, 46%, 48%) |
| OKLCH | oklch(49.9% 0.138 268.3) |
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 #425CB1 | 6.18:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #425CB1 | 3.39:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #425CB1 text on white | 6.18:1 | AA | Lc 80.6 | Fine for body text |
| #425CB1 text on black | 3.39:1 | AA large text | Lc -21.3 | 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
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F3
oklch(88.6% 0.037 268.9)
-
Step 300
300
#AEC0ED
oklch(81% 0.067 267.8)
-
Step 400
400
#849EE4
oklch(70.7% 0.107 268)
-
Step 500
500
#6684DC
oklch(63.1% 0.137 268.1)
-
Step 600
600
#4F6CC9
oklch(55.6% 0.148 268.3)
-
Step 700
700 (this color)
#425CB1
oklch(49.9% 0.138 268.3)
-
Step 800
800
#354A8D
oklch(42.8% 0.114 268.2)
-
Step 900
900
#2E3E71
oklch(37.7% 0.09 268.7)
-
Step 950
950
#1B2542
oklch(27.1% 0.056 268.2)
#425CB1 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) | #3166B4 | 0.029 |
| Deuteranopia (no green cones) | #1C5CAF | 0.034 |
| Tritanopia (no blue cones) | #006F7E | 0.117 |
| Achromatopsia (no color) | #616161 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425CB1
#425CB1
oklch(49.9% 0.138 268.3)
- #7B5F00
#7B5F00
oklch(50% 0.102 88.5)
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 #425CB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.041
- French Blue #436BAD ΔE 0.043
- Dusky Blue #475F94 ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.051
- Iris #6258C4 ΔE 0.054
- Twilight #4E518B ΔE 0.064
- Denim #3B638C ΔE 0.067
- Flat Blue #3C73A8 ΔE 0.068
Use #425CB1 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.