#1D1E40
Closest named color: Oxford Blue (#1B263B). oklch(25.4% 0.063 279.6), rgb(29, 30, 64).
Aa
White text reads best on this color (16.00:1).
About this color
#1D1E40 is a dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.063 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.030 away. White text reads best on it, at 16.00:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.31:1 |
| White text | 16.00:1 |
Values
| HEX | #1D1E40 |
| RGB | rgb(29, 30, 64) |
| HSL | hsl(238, 38%, 18%) |
| OKLCH | oklch(25.4% 0.063 279.6) |
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 #1D1E40 | 16.00:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #1D1E40 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #1D1E40 text on white | 16.00:1 | AAA | Lc 102.9 | Preferred for body text |
| #1D1E40 text on black | 1.31:1 | 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
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D3D7F5
oklch(88.5% 0.041 279.5)
-
Step 300
300
#B6BCF1
oklch(80.9% 0.075 279.5)
-
Step 400
400
#9298EA
oklch(70.8% 0.119 279.7)
-
Step 500
500
#787CE3
oklch(63.1% 0.152 279.4)
-
Step 600
600
#6363D1
oklch(55.7% 0.165 279.6)
-
Step 700
700
#5251B5
oklch(49.1% 0.154 279.5)
-
Step 800
800
#434392
oklch(42.7% 0.127 279.6)
-
Step 900
900
#383975
oklch(37.7% 0.1 279.7)
-
Step 950
950 (this color)
#1D1E40
oklch(25.4% 0.063 279.6)
#1D1E40 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) | #102341 | 0.023 |
| Deuteranopia (no green cones) | #0D203F | 0.023 |
| Tritanopia (no blue cones) | #10252B | 0.055 |
| Achromatopsia (no color) | #212121 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D1E40
#1D1E40
oklch(25.4% 0.063 279.6)
- #292300
#292300
oklch(25.5% 0.053 99.7)
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 #1D1E40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.030
- Dark #1B2431 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.051
- Jet #212529 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.057
- Dark Indigo #1F0954 ΔE 0.061
- Navy Blue #001146 ΔE 0.063
- Dark Purple #35063E ΔE 0.071
Use #1D1E40 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.