#1D2139
Closest named color: Oxford Blue (#1B263B). oklch(25.6% 0.046 275.5), rgb(29, 33, 57).
Aa
White text reads best on this color (15.80:1).
About this color
#1D2139 is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.046 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.016 away. White text reads best on it, at 15.80:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.32:1 |
| White text | 15.80:1 |
Values
| HEX | #1D2139 |
| RGB | rgb(29, 33, 57) |
| HSL | hsl(231, 33%, 17%) |
| OKLCH | oklch(25.6% 0.046 275.5) |
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 #1D2139 | 15.80:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #1D2139 | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #1D2139 text on white | 15.80:1 | AAA | Lc 102.7 | Preferred for body text |
| #1D2139 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BEE4
oklch(80.8% 0.054 275.8)
-
Step 400
400
#919CD7
oklch(70.6% 0.087 275.8)
-
Step 500
500
#7783CC
oklch(63.1% 0.111 275.7)
-
Step 600
600
#606CB9
oklch(55.7% 0.12 275.1)
-
Step 700
700
#50599F
oklch(49% 0.112 275.9)
-
Step 800
800
#414981
oklch(42.6% 0.093 275.6)
-
Step 900
900
#373E67
oklch(37.8% 0.071 275.1)
-
Step 950
950 (this color)
#1D2139
oklch(25.6% 0.046 275.5)
#1D2139 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) | #19243A | 0.011 |
| Deuteranopia (no green cones) | #162238 | 0.011 |
| Tritanopia (no blue cones) | #14262A | 0.040 |
| Achromatopsia (no color) | #232323 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D2139
#1D2139
oklch(25.6% 0.046 275.5)
- #2A2306
#2A2306
oklch(25.7% 0.045 95.6)
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 #1D2139, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.016
- Dark #1B2431 ΔE 0.021
- Jet #212529 ΔE 0.038
- Rich Black #0D1B2A ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.049
- Gunmetal #293241 ΔE 0.062
- Navy Blue #001146 ΔE 0.075
- Prussian Blue #1D3557 ΔE 0.077
Use #1D2139 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.