#425C77
Closest named color: YInMn Blue (#415A77). oklch(46.5% 0.054 250), rgb(66, 92, 119).
Aa
White text reads best on this color (6.93:1).
About this color
#425C77 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.054 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.006 away. White text reads best on it, at 6.93:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #425C77 |
| RGB | rgb(66, 92, 119) |
| HSL | hsl(211, 29%, 36%) |
| OKLCH | oklch(46.5% 0.054 250) |
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 #425C77 | 6.93:1 | AA | Lc -88.9 | Fine for body text |
| Black text on #425C77 | 3.02:1 | AA large text | Lc 20.1 | Dividers and decoration only |
| #425C77 text on white | 6.93:1 | AA | Lc 83.9 | Fine for body text |
| #425C77 text on black | 3.02:1 | AA large text | Lc -18.0 | 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
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B4C2D1
oklch(80.8% 0.026 250)
-
Step 400
400
#8DA3BA
oklch(70.6% 0.042 249.6)
-
Step 500
500
#718CA9
oklch(63% 0.054 250.5)
-
Step 600
600
#597695
oklch(55.6% 0.059 250.6)
-
Step 700
700 (this color)
#425C77
oklch(46.5% 0.054 250)
-
Step 800
800
#3C5167
oklch(42.7% 0.045 250.1)
-
Step 900
900
#334354
oklch(37.6% 0.036 250.3)
-
Step 950
950
#1E2731
oklch(26.9% 0.023 251.3)
#425C77 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) | #515D78 | 0.021 |
| Deuteranopia (no green cones) | #4B5776 | 0.018 |
| Tritanopia (no blue cones) | #2E6265 | 0.046 |
| Achromatopsia (no color) | #5A5A5A | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425C77
#425C77
oklch(46.5% 0.054 250)
- #6D5437
#6D5437
oklch(46.4% 0.054 70)
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 #425C77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.006
- Dusty Grape #545775 ΔE 0.027
- Denim #3B638C ΔE 0.035
- Dusk #4E5481 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.037
- Slate #516572 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.048
Use #425C77 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.