#1F1938
Closest named color: Oxford Blue (#1B263B). oklch(23.8% 0.058 290.2), rgb(31, 25, 56).
Aa
White text reads best on this color (16.74:1).
About this color
#1F1938 is a very dark, muted purple. In OKLCH its lightness is 24%, its chroma 0.058 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.042 away. White text reads best on it, at 16.74:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | muted (0.058) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.25:1 |
| White text | 16.74:1 |
Values
| HEX | #1F1938 |
| RGB | rgb(31, 25, 56) |
| HSL | hsl(252, 38%, 16%) |
| OKLCH | oklch(23.8% 0.058 290.2) |
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 #1F1938 | 16.74:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #1F1938 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #1F1938 text on white | 16.74:1 | AAA | Lc 103.6 | Preferred for body text |
| #1F1938 text on black | 1.25:1 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D8D5F1
oklch(88.4% 0.038 290.5)
-
Step 300
300
#BFBAEB
oklch(81% 0.069 289.4)
-
Step 400
400
#A094E0
oklch(70.6% 0.11 290.5)
-
Step 500
500
#8A78D7
oklch(63.1% 0.14 290.5)
-
Step 600
600
#745FC5
oklch(55.6% 0.153 290)
-
Step 700
700
#624EAA
oklch(49.1% 0.142 290.2)
-
Step 800
800
#50408A
oklch(42.7% 0.118 290.4)
-
Step 900
900
#42376E
oklch(37.7% 0.092 290.5)
-
Step 950
950 (this color)
#1F1938
oklch(23.8% 0.058 290.2)
#1F1938 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) | #0E1E39 | 0.030 |
| Deuteranopia (no green cones) | #0E1D37 | 0.029 |
| Tritanopia (no blue cones) | #181F25 | 0.049 |
| Achromatopsia (no color) | #1E1E1E | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1938
#1F1938
oklch(23.8% 0.058 290.2)
- #202100
#202100
oklch(23.9% 0.053 111.4)
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 #1F1938, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.042
- Dark #1B2431 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.043
- Jet #212529 ΔE 0.057
- Midnight Purple #280137 ΔE 0.061
- Very Dark Purple #2A0134 ΔE 0.062
- Dark Purple #35063E ΔE 0.062
- Navy Blue #001146 ΔE 0.064
Use #1F1938 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.