#42495D
Closest named color: Dark Grey Blue (#29465B). oklch(40.7% 0.035 269.8), rgb(66, 73, 93).
Aa
White text reads best on this color (8.96:1).
About this color
#42495D is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.035 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.037 away. White text reads best on it, at 8.96:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.34:1 |
| White text | 8.96:1 |
Values
| HEX | #42495D |
| RGB | rgb(66, 73, 93) |
| HSL | hsl(224, 17%, 31%) |
| OKLCH | oklch(40.7% 0.035 269.8) |
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 #42495D | 8.96:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #42495D | 2.34:1 | Fails | Lc 13.4 | Not readable |
| #42495D text on white | 8.96:1 | AAA | Lc 90.6 | Preferred for body text |
| #42495D text on black | 2.34:1 | Fails | Lc -11.7 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E1
oklch(88.5% 0.011 269.5)
-
Step 300
300
#BBC0CE
oklch(80.8% 0.02 270.2)
-
Step 400
400
#98A0B6
oklch(70.7% 0.033 269.7)
-
Step 500
500
#7F89A3
oklch(63.1% 0.041 268.6)
-
Step 600
600
#69728F
oklch(55.5% 0.046 271.4)
-
Step 700
700
#576079
oklch(49.1% 0.042 269.4)
-
Step 800
800 (this color)
#42495D
oklch(40.7% 0.035 269.8)
-
Step 900
900
#3C4150
oklch(37.7% 0.027 270.6)
-
Step 950
950
#23262F
oklch(26.9% 0.017 270.7)
#42495D 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) | #434B5E | 0.006 |
| Deuteranopia (no green cones) | #41485D | 0.004 |
| Tritanopia (no blue cones) | #3B4D50 | 0.031 |
| Achromatopsia (no color) | #494949 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42495D
#42495D
oklch(40.7% 0.035 269.8)
- #514934
#514934
oklch(40.7% 0.035 89.6)
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 #42495D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.044
- Charcoal #264653 ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.048
- YInMn Blue #415A77 ΔE 0.058
- Dusty Grape #545775 ΔE 0.061
- Deep Teal #00555A ΔE 0.065
- Dusk #4E5481 ΔE 0.066
Use #42495D 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.