#212640
Closest named color: Oxford Blue (#1B263B). oklch(27.7% 0.049 274.5), rgb(33, 38, 64).
Aa
White text reads best on this color (14.83:1).
About this color
#212640 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.049 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.014 away. White text reads best on it, at 14.83:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.41:1 |
| White text | 14.83:1 |
Values
| HEX | #212640 |
| RGB | rgb(33, 38, 64) |
| HSL | hsl(230, 32%, 19%) |
| OKLCH | oklch(27.7% 0.049 274.5) |
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 #212640 | 14.83:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #212640 | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #212640 text on white | 14.83:1 | AAA | Lc 101.6 | Preferred for body text |
| #212640 text on black | 1.41:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EF
oklch(88.5% 0.032 274.1)
-
Step 300
300
#B5BEE7
oklch(80.8% 0.059 275.3)
-
Step 400
400
#8F9CDA
oklch(70.6% 0.092 274.7)
-
Step 500
500
#7483D0
oklch(63.1% 0.117 274.2)
-
Step 600
600
#5E6BBD
oklch(55.6% 0.127 274.7)
-
Step 700
700
#4D59A3
oklch(49.1% 0.119 274.3)
-
Step 800
800
#3F4984
oklch(42.7% 0.098 274.2)
-
Step 900
900
#363D6A
oklch(37.6% 0.077 275.4)
-
Step 950
950 (this color)
#212640
oklch(27.7% 0.049 274.5)
#212640 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) | #1D2941 | 0.011 |
| Deuteranopia (no green cones) | #1A263F | 0.011 |
| Tritanopia (no blue cones) | #172B30 | 0.042 |
| Achromatopsia (no color) | #282828 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212640
#212640
oklch(27.7% 0.049 274.5)
- #302808
#302808
oklch(27.8% 0.049 94.9)
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 #212640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.014
- Space Cadet #2B2D42 ΔE 0.030
- Dark #1B2431 ΔE 0.030
- Jet #212529 ΔE 0.043
- Gunmetal #293241 ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.057
- Marine #042E60 ΔE 0.063
- Rich Black #0D1B2A ΔE 0.063
Use #212640 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.