#1D2D39
Closest named color: Oxford Blue (#1B263B). oklch(28.9% 0.031 241.5), rgb(29, 45, 57).
Aa
White text reads best on this color (14.12:1).
About this color
#1D2D39 is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.031 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.026 away. White text reads best on it, at 14.12:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.48:1 |
| White text | 14.12:1 |
Values
| HEX | #1D2D39 |
| RGB | rgb(29, 45, 57) |
| HSL | hsl(206, 33%, 17%) |
| OKLCH | oklch(28.9% 0.031 241.5) |
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 #1D2D39 | 14.12:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #1D2D39 | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #1D2D39 text on white | 14.12:1 | AAA | Lc 100.8 | Preferred for body text |
| #1D2D39 text on black | 1.48:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#ADC4D6
oklch(80.9% 0.036 241.6)
-
Step 400
400
#81A6C2
oklch(70.8% 0.058 241.3)
-
Step 500
500
#608FB3
oklch(63.1% 0.075 242.3)
-
Step 600
600
#45799F
oklch(55.6% 0.082 241.9)
-
Step 700
700
#366688
oklch(49.2% 0.076 241.4)
-
Step 800
800
#2E536E
oklch(42.7% 0.062 241.9)
-
Step 900
900
#294559
oklch(37.7% 0.048 240.8)
-
Step 950
950 (this color)
#1D2D39
oklch(28.9% 0.031 241.5)
#1D2D39 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) | #282D3A | 0.017 |
| Deuteranopia (no green cones) | #242A39 | 0.014 |
| Tritanopia (no blue cones) | #123031 | 0.025 |
| Achromatopsia (no color) | #2B2B2B | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D2D39
#1D2D39
oklch(28.9% 0.031 241.5)
- #36281B
#36281B
oklch(28.9% 0.031 64)
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 #1D2D39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.029
- Gunmetal #293241 ΔE 0.029
- Dark #1B2431 ΔE 0.032
- Jet #212529 ΔE 0.034
- Midnight Green #073B4C ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.055
Use #1D2D39 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.