#212747
Closest named color: Oxford Blue (#1B263B). oklch(28.4% 0.059 274), rgb(33, 39, 71).
Aa
White text reads best on this color (14.52:1).
About this color
#212747 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.059 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.025 away. White text reads best on it, at 14.52:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.44:1 |
| White text | 14.52:1 |
Values
| HEX | #212747 |
| RGB | rgb(33, 39, 71) |
| HSL | hsl(231, 37%, 20%) |
| OKLCH | oklch(28.4% 0.059 274) |
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 #212747 | 14.52:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #212747 | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #212747 text on white | 14.52:1 | AAA | Lc 101.2 | Preferred for body text |
| #212747 text on black | 1.44:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D1D8F4
oklch(88.6% 0.039 274.4)
-
Step 300
300
#B2BEEF
oklch(80.9% 0.071 274)
-
Step 400
400
#8B9BE7
oklch(70.7% 0.113 274.1)
-
Step 500
500
#6F80DF
oklch(63% 0.144 273.9)
-
Step 600
600
#5968CD
oklch(55.7% 0.155 273.9)
-
Step 700
700
#4956B1
oklch(49.1% 0.144 273.8)
-
Step 800
800
#3C4790
oklch(42.8% 0.12 273.8)
-
Step 900
900
#333C73
oklch(37.8% 0.094 274)
-
Step 950
950 (this color)
#212747
oklch(28.4% 0.059 274)
#212747 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) | #1B2B48 | 0.014 |
| Deuteranopia (no green cones) | #172846 | 0.015 |
| Tritanopia (no blue cones) | #122E33 | 0.054 |
| Achromatopsia (no color) | #292929 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212747
#212747
oklch(28.4% 0.059 274)
- #332900
#332900
oklch(28.4% 0.058 94.7)
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 #212747, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.030
- Dark #1B2431 ΔE 0.043
- Gunmetal #293241 ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.048
- Marine #042E60 ΔE 0.052
- Jet #212529 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.064
Use #212747 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.