#42596D
Closest named color: YInMn Blue (#415A77). oklch(45.3% 0.043 245.2), rgb(66, 89, 109).
Aa
White text reads best on this color (7.28:1).
About this color
#42596D is a medium-dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.043 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.016 away. White text reads best on it, at 7.28:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.88:1 |
| White text | 7.28:1 |
Values
| HEX | #42596D |
| RGB | rgb(66, 89, 109) |
| HSL | hsl(208, 25%, 34%) |
| OKLCH | oklch(45.3% 0.043 245.2) |
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 #42596D | 7.28:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #42596D | 2.88:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #42596D text on white | 7.28:1 | AAA | Lc 85.3 | Fine for body text |
| #42596D text on black | 2.88:1 | Fails | Lc -16.7 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B4C3D0
oklch(81% 0.025 244.2)
-
Step 400
400
#8CA4B9
oklch(70.7% 0.041 244.8)
-
Step 500
500
#708DA7
oklch(63.1% 0.051 245.8)
-
Step 600
600
#587792
oklch(55.6% 0.055 245.3)
-
Step 700
700
#47647D
oklch(49.1% 0.053 245.2)
-
Step 800
800 (this color)
#42596D
oklch(45.3% 0.043 245.2)
-
Step 900
900
#334453
oklch(37.8% 0.034 245.5)
-
Step 950
950
#1E2830
oklch(27.1% 0.02 242.7)
#42596D 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) | #51596E | 0.021 |
| Deuteranopia (no green cones) | #4B546D | 0.019 |
| Tritanopia (no blue cones) | #335E60 | 0.036 |
| Achromatopsia (no color) | #565656 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42596D
#42596D
oklch(45.3% 0.043 245.2)
- #67513D
#67513D
oklch(45.2% 0.043 63.7)
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 #42596D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.016
- Dusty Grape #545775 ΔE 0.031
- Slate #516572 ΔE 0.044
- Dusk #4E5481 ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.048
- Petrol #005F6A ΔE 0.050
- Denim #3B638C ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.060
Use #42596D 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.