#21425E
Closest named color: Dark Grey Blue (#29465B). oklch(36.8% 0.062 246.2), rgb(33, 66, 94).
Aa
White text reads best on this color (10.47:1).
About this color
#21425E is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.062 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.018 away. White text reads best on it, at 10.47:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.00:1 |
| White text | 10.47:1 |
Values
| HEX | #21425E |
| RGB | rgb(33, 66, 94) |
| HSL | hsl(208, 48%, 25%) |
| OKLCH | oklch(36.8% 0.062 246.2) |
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 #21425E | 10.47:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #21425E | 2.00:1 | Fails | Lc 9.8 | Not readable |
| #21425E text on white | 10.47:1 | AAA | Lc 94.1 | Preferred for body text |
| #21425E text on black | 2.00:1 | Fails | Lc -8.4 | 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 900.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#A9C4DE
oklch(80.9% 0.047 247.4)
-
Step 400
400
#7AA6CD
oklch(70.8% 0.075 245.9)
-
Step 500
500
#568FC0
oklch(63.1% 0.096 246)
-
Step 600
600
#3A78AC
oklch(55.5% 0.103 246.4)
-
Step 700
700
#2B6594
oklch(49.1% 0.097 246.1)
-
Step 800
800
#255378
oklch(42.8% 0.08 245.5)
-
Step 900
900 (this color)
#21425E
oklch(36.8% 0.062 246.2)
-
Step 950
950
#152839
oklch(26.9% 0.04 246.9)
#21425E 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) | #36435F | 0.027 |
| Deuteranopia (no green cones) | #2E3D5D | 0.020 |
| Tritanopia (no blue cones) | #00494C | 0.049 |
| Achromatopsia (no color) | #3F3F3F | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21425E
#21425E
oklch(36.8% 0.062 246.2)
- #553818
#553818
oklch(36.8% 0.062 66.3)
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 #21425E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.018
- Charcoal #264653 ΔE 0.027
- Dark Blue Grey #1F3B4D ΔE 0.034
- Prussian Blue #1D3557 ΔE 0.042
- Midnight Green #073B4C ΔE 0.044
- Twilight Blue #0A437A ΔE 0.049
- Marine Blue #01386A ΔE 0.049
- Onyx #343A40 ΔE 0.054
Use #21425E 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.