#21344A
Closest named color: Gunmetal (#293241). oklch(32% 0.047 252.8), rgb(33, 52, 74).
Aa
White text reads best on this color (12.69:1).
About this color
#21344A is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.047 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.018 away. White text reads best on it, at 12.69:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.65:1 |
| White text | 12.69:1 |
Values
| HEX | #21344A |
| RGB | rgb(33, 52, 74) |
| HSL | hsl(212, 38%, 21%) |
| OKLCH | oklch(32% 0.047 252.8) |
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 #21344A | 12.69:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #21344A | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #21344A text on white | 12.69:1 | AAA | Lc 98.7 | Preferred for body text |
| #21344A 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A8C3E4
oklch(80.8% 0.055 253.6)
-
Step 400
400
#79A4D7
oklch(70.7% 0.089 253.2)
-
Step 500
500
#558CCC
oklch(63% 0.113 253.3)
-
Step 600
600
#3875B9
oklch(55.5% 0.124 253.1)
-
Step 700
700
#2A629F
oklch(49% 0.114 252.9)
-
Step 800
800
#245081
oklch(42.6% 0.095 253.1)
-
Step 900
900
#234368
oklch(37.7% 0.074 253.3)
-
Step 950
950 (this color)
#21344A
oklch(32% 0.047 252.8)
#21344A 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) | #2B354B | 0.015 |
| Deuteranopia (no green cones) | #26314A | 0.011 |
| Tritanopia (no blue cones) | #0E393C | 0.040 |
| Achromatopsia (no color) | #333333 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21344A
#21344A
oklch(32% 0.047 252.8)
- #412F16
#412F16
oklch(32% 0.047 73.8)
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 #21344A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.018
- Dark Blue Grey #1F3B4D ΔE 0.022
- Prussian Blue #1D3557 ΔE 0.023
- Space Cadet #2B2D42 ΔE 0.026
- Midnight Green #073B4C ΔE 0.029
- Onyx #343A40 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.051
- Marine #042E60 ΔE 0.054
Use #21344A 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.