#425F79
Closest named color: YInMn Blue (#415A77). oklch(47.4% 0.055 246.3), rgb(66, 95, 121).
Aa
White text reads best on this color (6.67:1).
About this color
#425F79 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.055 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.015 away. White text reads best on it, at 6.67:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.14:1 |
| White text | 6.67:1 |
Values
| HEX | #425F79 |
| RGB | rgb(66, 95, 121) |
| HSL | hsl(208, 29%, 37%) |
| OKLCH | oklch(47.4% 0.055 246.3) |
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 #425F79 | 6.67:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #425F79 | 3.14:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #425F79 text on white | 6.67:1 | AA | Lc 82.9 | Fine for body text |
| #425F79 text on black | 3.14:1 | AA large text | Lc -19.0 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B3C3D1
oklch(80.9% 0.026 244.5)
-
Step 400
400
#8CA4BA
oklch(70.8% 0.042 246.1)
-
Step 500
500
#6F8DA9
oklch(63.1% 0.054 246.9)
-
Step 600
600
#577794
oklch(55.6% 0.058 246.4)
-
Step 700
700 (this color)
#425F79
oklch(47.4% 0.055 246.3)
-
Step 800
800
#3A5267
oklch(42.8% 0.046 245.6)
-
Step 900
900
#324453
oklch(37.8% 0.035 244)
-
Step 950
950
#1E2831
oklch(27.1% 0.022 245.9)
#425F79 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) | #545F7A | 0.024 |
| Deuteranopia (no green cones) | #4D5A79 | 0.020 |
| Tritanopia (no blue cones) | #2C6568 | 0.045 |
| Achromatopsia (no color) | #5C5C5C | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425F79
#425F79
oklch(47.4% 0.055 246.3)
- #71563A
#71563A
oklch(47.4% 0.055 66.9)
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 #425F79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.015
- Denim #3B638C ΔE 0.030
- Dusty Grape #545775 ΔE 0.031
- Slate #516572 ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.039
- Dusk #4E5481 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.046
Use #425F79 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.