#425589
Closest named color: Twilight (#4E518B). oklch(45.9% 0.088 267.7), rgb(66, 85, 137).
Aa
White text reads best on this color (7.26:1).
About this color
#425589 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.088 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.020 away. White text reads best on it, at 7.26:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.89:1 |
| White text | 7.26:1 |
Values
| HEX | #425589 |
| RGB | rgb(66, 85, 137) |
| HSL | hsl(224, 35%, 40%) |
| OKLCH | oklch(45.9% 0.088 267.7) |
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 #425589 | 7.26:1 | AAA | Lc -90.0 | Fine for body text |
| Black text on #425589 | 2.89:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #425589 text on white | 7.26:1 | AAA | Lc 85.1 | Fine for body text |
| #425589 text on black | 2.89:1 | Fails | Lc -16.9 | 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 800.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D1D9ED
oklch(88.5% 0.029 268.3)
-
Step 300
300
#B2C0E3
oklch(80.9% 0.052 268)
-
Step 400
400
#8A9FD5
oklch(70.7% 0.083 267.8)
-
Step 500
500
#6D87CA
oklch(63.2% 0.106 267.2)
-
Step 600
600
#566FB6
oklch(55.5% 0.115 267.9)
-
Step 700
700
#465D9D
oklch(49.1% 0.107 267.5)
-
Step 800
800 (this color)
#425589
oklch(45.9% 0.088 267.7)
-
Step 900
900
#324066
oklch(37.8% 0.068 267.7)
-
Step 950
950
#1D263C
oklch(27.1% 0.043 266.6)
#425589 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) | #415A8B | 0.014 |
| Deuteranopia (no green cones) | #395488 | 0.012 |
| Tritanopia (no blue cones) | #236068 | 0.079 |
| Achromatopsia (no color) | #575757 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425589
#425589
oklch(45.9% 0.088 267.7)
- #6C540D
#6C540D
oklch(45.8% 0.088 88)
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 #425589, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.020
- Dusk #4E5481 ΔE 0.020
- Denim Blue #3B5B92 ΔE 0.021
- Light Navy Blue #2E5A88 ΔE 0.025
- Dusky Blue #475F94 ΔE 0.033
- Dusk Blue #26538D ΔE 0.033
- YInMn Blue #415A77 ΔE 0.037
- Denim #3B638C ΔE 0.040
Use #425589 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.