#425E8A
Closest named color: Denim (#3B638C). oklch(48% 0.079 259.2), rgb(66, 94, 138).
Aa
White text reads best on this color (6.56:1).
About this color
#425E8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.079 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.015 away. White text reads best on it, at 6.56:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.19:1 |
| White text | 6.56:1 |
Values
| HEX | #425E8A |
| RGB | rgb(66, 94, 138) |
| HSL | hsl(217, 35%, 40%) |
| OKLCH | oklch(48% 0.079 259.2) |
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 #425E8A | 6.56:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #425E8A | 3.19:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #425E8A text on white | 6.56:1 | AA | Lc 82.4 | Fine for body text |
| #425E8A text on black | 3.19:1 | AA large text | Lc -19.5 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D1DAE8
oklch(88.6% 0.022 259.2)
-
Step 300
300
#B2C2DA
oklch(81% 0.038 258.4)
-
Step 400
400
#8AA2C7
oklch(70.7% 0.061 258.9)
-
Step 500
500
#6D8BB9
oklch(63.2% 0.078 258.8)
-
Step 600
600
#5574A5
oklch(55.6% 0.085 259.3)
-
Step 700
700 (this color)
#425E8A
oklch(48% 0.079 259.2)
-
Step 800
800
#394F73
oklch(42.6% 0.066 259.9)
-
Step 900
900
#31425D
oklch(37.7% 0.052 259.4)
-
Step 950
950
#1D2736
oklch(27% 0.031 258.3)
#425E8A 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) | #4D618C | 0.018 |
| Deuteranopia (no green cones) | #445A89 | 0.011 |
| Tritanopia (no blue cones) | #20686E | 0.070 |
| Achromatopsia (no color) | #5D5D5D | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425E8A
#425E8A
oklch(48% 0.079 259.2)
- #755824
#755824
oklch(48% 0.079 79.5)
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 #425E8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.015
- Dusky Blue #475F94 ΔE 0.018
- Denim Blue #3B5B92 ΔE 0.019
- Light Navy Blue #2E5A88 ΔE 0.027
- YInMn Blue #415A77 ΔE 0.031
- Dusk #4E5481 ΔE 0.031
- Twilight #4E518B ΔE 0.040
- Dusty Grape #545775 ΔE 0.040
Use #425E8A 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.