#42536D
Closest named color: YInMn Blue (#415A77). oklch(43.9% 0.048 258.7), rgb(66, 83, 109).
Aa
White text reads best on this color (7.80:1).
About this color
#42536D is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.048 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.023 away. White text reads best on it, at 7.80:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.68:1 |
| White text | 7.80:1 |
Values
| HEX | #42536D |
| RGB | rgb(66, 83, 109) |
| HSL | hsl(216, 25%, 34%) |
| OKLCH | oklch(43.9% 0.048 258.7) |
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 #42536D | 7.80:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #42536D | 2.68:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #42536D text on white | 7.80:1 | AAA | Lc 87.1 | Fine for body text |
| #42536D text on black | 2.68:1 | Fails | Lc -15.0 | 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 800.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D3DAE4
oklch(88.6% 0.016 257.2)
-
Step 300
300
#B6C1D3
oklch(80.8% 0.028 260.3)
-
Step 400
400
#90A2BD
oklch(70.7% 0.045 258.4)
-
Step 500
500
#748BAD
oklch(63.1% 0.058 258)
-
Step 600
600
#5D7498
oklch(55.5% 0.063 259.2)
-
Step 700
700
#4C6282
oklch(49.2% 0.058 257.7)
-
Step 800
800 (this color)
#42536D
oklch(43.9% 0.048 258.7)
-
Step 900
900
#354256
oklch(37.6% 0.038 258.9)
-
Step 950
950
#1F2732
oklch(27% 0.024 256.4)
#42536D 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) | #4A546E | 0.012 |
| Deuteranopia (no green cones) | #45506C | 0.009 |
| Tritanopia (no blue cones) | #34595C | 0.043 |
| Achromatopsia (no color) | #525252 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42536D
#42536D
oklch(43.9% 0.048 258.7)
- #614F33
#614F33
oklch(43.9% 0.048 78)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #42536D
These curated palettes and gradients contain exactly #42536D. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.023
- Dusty Grape #545775 ΔE 0.033
- Dusk #4E5481 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.047
- Twilight #4E518B ΔE 0.056
- Dark Slate Gray #2F4F4F ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.059
- Petrol #005F6A ΔE 0.059
Use #42536D 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.