#1F1D3E
Closest named color: Oxford Blue (#1B263B). oklch(25.2% 0.061 283.9), rgb(31, 29, 62).
Aa
White text reads best on this color (16.10:1).
About this color
#1F1D3E is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.061 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.031 away. White text reads best on it, at 16.10:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.10:1 |
Values
| HEX | #1F1D3E |
| RGB | rgb(31, 29, 62) |
| HSL | hsl(244, 36%, 18%) |
| OKLCH | oklch(25.2% 0.061 283.9) |
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 #1F1D3E | 16.10:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #1F1D3E | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #1F1D3E text on white | 16.10:1 | AAA | Lc 103.0 | Preferred for body text |
| #1F1D3E text on black | 1.30:1 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D5D6F3
oklch(88.4% 0.04 284)
-
Step 300
300
#BABBEE
oklch(80.9% 0.072 283.8)
-
Step 400
400
#9896E6
oklch(70.7% 0.116 284.2)
-
Step 500
500
#807ADF
oklch(63.1% 0.149 284)
-
Step 600
600
#6B61CC
oklch(55.6% 0.16 284.1)
-
Step 700
700
#5950B1
oklch(49.2% 0.149 283.7)
-
Step 800
800
#49428F
oklch(42.8% 0.123 284)
-
Step 900
900
#3C3872
oklch(37.6% 0.097 283.8)
-
Step 950
950 (this color)
#1F1D3E
oklch(25.2% 0.061 283.9)
#1F1D3E 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) | #10223F | 0.026 |
| Deuteranopia (no green cones) | #0F203D | 0.025 |
| Tritanopia (no blue cones) | #15242A | 0.053 |
| Achromatopsia (no color) | #212121 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1D3E
#1F1D3E
oklch(25.2% 0.061 283.9)
- #272300
#272300
oklch(25.3% 0.053 103.1)
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 #1F1D3E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.031
- Dark #1B2431 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.050
- Jet #212529 ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.058
- Dark Indigo #1F0954 ΔE 0.062
- Navy Blue #001146 ΔE 0.065
- Dark Purple #35063E ΔE 0.067
Use #1F1D3E 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.