#211738
Closest named color: Rich Black (#0D1B2A). oklch(23.6% 0.062 295.2), rgb(33, 23, 56).
Aa
White text reads best on this color (16.87:1).
About this color
#211738 is a very dark, muted purple. In OKLCH its lightness is 24%, its chroma 0.062 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.048 away. White text reads best on it, at 16.87:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | muted (0.062) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.87:1 |
Values
| HEX | #211738 |
| RGB | rgb(33, 23, 56) |
| HSL | hsl(258, 42%, 15%) |
| OKLCH | oklch(23.6% 0.062 295.2) |
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 #211738 | 16.87:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #211738 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #211738 text on white | 16.87:1 | AAA | Lc 103.7 | Preferred for body text |
| #211738 text on black | 1.24:1 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EAE7F7
oklch(93.5% 0.022 294.6)
-
Step 200
200
#DBD4F2
oklch(88.5% 0.041 296.2)
-
Step 300
300
#C4B8EC
oklch(81% 0.073 295.3)
-
Step 400
400
#A691E2
oklch(70.7% 0.118 295.1)
-
Step 500
500
#9174D9
oklch(63.1% 0.149 295)
-
Step 600
600
#7C5AC7
oklch(55.6% 0.163 294.9)
-
Step 700
700
#6949AC
oklch(49.1% 0.152 295.1)
-
Step 800
800
#563D8B
oklch(42.8% 0.125 295.4)
-
Step 900
900
#46356F
oklch(37.7% 0.097 294.8)
-
Step 950
950 (this color)
#211738
oklch(23.6% 0.062 295.2)
#211738 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) | #0B1D39 | 0.038 |
| Deuteranopia (no green cones) | #0D1C37 | 0.036 |
| Tritanopia (no blue cones) | #1C1D24 | 0.049 |
| Achromatopsia (no color) | #1D1D1D | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #211738
#211738
oklch(23.6% 0.062 295.2)
- #1E2100
#1E2100
oklch(23.7% 0.053 114.6)
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 #211738, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.048
- Oxford Blue #1B263B ΔE 0.048
- Dark #1B2431 ΔE 0.048
- Midnight Purple #280137 ΔE 0.054
- Very Dark Purple #2A0134 ΔE 0.055
- Dark Purple #35063E ΔE 0.056
- Eggplant #380835 ΔE 0.058
- Dark Indigo #1F0954 ΔE 0.061
Use #211738 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.