#1F203A
Closest named color: Oxford Blue (#1B263B). oklch(25.6% 0.049 280.7), rgb(31, 32, 58).
Aa
White text reads best on this color (15.83:1).
About this color
#1F203A is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.049 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.020 away. White text reads best on it, at 15.83:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.32:1 |
| White text | 15.83:1 |
Values
| HEX | #1F203A |
| RGB | rgb(31, 32, 58) |
| HSL | hsl(238, 30%, 17%) |
| OKLCH | oklch(25.6% 0.049 280.7) |
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 #1F203A | 15.83:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #1F203A | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #1F203A text on white | 15.83:1 | AAA | Lc 102.7 | Preferred for body text |
| #1F203A text on black | 1.32:1 | 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
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D5D7EE
oklch(88.5% 0.032 281.8)
-
Step 300
300
#B9BDE6
oklch(80.9% 0.058 280.6)
-
Step 400
400
#969AD9
oklch(70.7% 0.092 281)
-
Step 500
500
#7D80CF
oklch(63.1% 0.118 280.8)
-
Step 600
600
#6768BC
oklch(55.6% 0.128 280.9)
-
Step 700
700
#5656A2
oklch(49.1% 0.119 281.1)
-
Step 800
800
#464783
oklch(42.7% 0.098 280.7)
-
Step 900
900
#3B3C69
oklch(37.8% 0.076 281.1)
-
Step 950
950 (this color)
#1F203A
oklch(25.6% 0.049 280.7)
#1F203A 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) | #17233B | 0.015 |
| Deuteranopia (no green cones) | #162139 | 0.015 |
| Tritanopia (no blue cones) | #17252A | 0.042 |
| Achromatopsia (no color) | #222222 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F203A
#1F203A
oklch(25.6% 0.049 280.7)
- #282404
#282404
oklch(25.7% 0.049 102.3)
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 #1F203A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.020
- Dark #1B2431 ΔE 0.026
- Jet #212529 ΔE 0.041
- Rich Black #0D1B2A ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.050
- Gunmetal #293241 ΔE 0.063
- Navy Blue #001146 ΔE 0.074
- Eggplant #380835 ΔE 0.075
Use #1F203A 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.