#425166
Closest named color: YInMn Blue (#415A77). oklch(43.1% 0.04 256.8), rgb(66, 81, 102).
Aa
White text reads best on this color (8.07:1).
About this color
#425166 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.040 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.034 away. White text reads best on it, at 8.07:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.60:1 |
| White text | 8.07:1 |
Values
| HEX | #425166 |
| RGB | rgb(66, 81, 102) |
| HSL | hsl(215, 21%, 33%) |
| OKLCH | oklch(43.1% 0.04 256.8) |
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 #425166 | 8.07:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #425166 | 2.60:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #425166 text on white | 8.07:1 | AAA | Lc 88.0 | Fine for body text |
| #425166 text on black | 2.60:1 | Fails | Lc -14.2 | Not readable |
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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4DAE2
oklch(88.6% 0.013 255.5)
-
Step 300
300
#B7C1D0
oklch(80.8% 0.024 258.4)
-
Step 400
400
#92A2B8
oklch(70.7% 0.037 256.4)
-
Step 500
500
#778BA7
oklch(63.1% 0.048 256.8)
-
Step 600
600
#607592
oklch(55.7% 0.052 256.5)
-
Step 700
700
#4F627C
oklch(49.1% 0.048 256.3)
-
Step 800
800 (this color)
#425166
oklch(43.1% 0.04 256.8)
-
Step 900
900
#374252
oklch(37.6% 0.031 257.7)
-
Step 950
950
#202730
oklch(27% 0.02 254.8)
#425166 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) | #4A5267 | 0.013 |
| Deuteranopia (no green cones) | #464E66 | 0.010 |
| Tritanopia (no blue cones) | #375558 | 0.034 |
| Achromatopsia (no color) | #505050 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425166
#425166
oklch(43.1% 0.04 256.8)
- #5D4D37
#5D4D37
oklch(43% 0.04 75.2)
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 #425166, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.034
- Dusty Grape #545775 ΔE 0.041
- Dark Slate Gray #2F4F4F ΔE 0.048
- Dusk #4E5481 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.058
- Petrol #005F6A ΔE 0.060
- Charcoal #264653 ΔE 0.060
Use #425166 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.