#21344B
Closest named color: Gunmetal (#293241). oklch(32% 0.048 253.8), rgb(33, 52, 75).
Aa
White text reads best on this color (12.66:1).
About this color
#21344B is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.048 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.020 away. White text reads best on it, at 12.66:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.65:1 |
| White text | 12.66:1 |
Values
| HEX | #21344B |
| RGB | rgb(33, 52, 75) |
| HSL | hsl(213, 39%, 21%) |
| OKLCH | oklch(32% 0.048 253.8) |
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 #21344B | 12.66:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #21344B | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #21344B text on white | 12.66:1 | AAA | Lc 98.6 | Preferred for body text |
| #21344B text on black | 1.65:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CBDBEE
oklch(88.5% 0.031 252.7)
-
Step 300
300
#A8C3E5
oklch(80.9% 0.057 254.3)
-
Step 400
400
#78A4D9
oklch(70.8% 0.092 253.6)
-
Step 500
500
#548CCE
oklch(63.1% 0.116 253.6)
-
Step 600
600
#3875BB
oklch(55.6% 0.126 253.7)
-
Step 700
700
#2A62A2
oklch(49.2% 0.118 253.8)
-
Step 800
800
#245083
oklch(42.7% 0.098 253.9)
-
Step 900
900
#224369
oklch(37.7% 0.076 253.3)
-
Step 950
950 (this color)
#21344B
oklch(32% 0.048 253.8)
#21344B 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) | #2B354C | 0.015 |
| Deuteranopia (no green cones) | #26314B | 0.011 |
| Tritanopia (no blue cones) | #0D393C | 0.042 |
| Achromatopsia (no color) | #333333 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21344B
#21344B
oklch(32% 0.048 253.8)
- #422F15
#422F15
oklch(32.1% 0.048 73.2)
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 #21344B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.020
- Prussian Blue #1D3557 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.023
- Space Cadet #2B2D42 ΔE 0.026
- Midnight Green #073B4C ΔE 0.029
- Onyx #343A40 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.052
- Marine #042E60 ΔE 0.053
Use #21344B 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.