#1D2833
Closest named color: Dark (#1B2431). oklch(27.2% 0.026 248.8), rgb(29, 40, 51).
Aa
White text reads best on this color (14.96:1).
About this color
#1D2833 is a dark close to neutral grey. In OKLCH its lightness is 27%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.014 away. White text reads best on it, at 14.96:1.
| Hue family | Neutrals |
| Lightness | dark (27%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.40:1 |
| White text | 14.96:1 |
Values
| HEX | #1D2833 |
| RGB | rgb(29, 40, 51) |
| HSL | hsl(210, 28%, 16%) |
| OKLCH | oklch(27.2% 0.026 248.8) |
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 #1D2833 | 14.96:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #1D2833 | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #1D2833 text on white | 14.96:1 | AAA | Lc 101.8 | Preferred for body text |
| #1D2833 text on black | 1.40:1 | 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
#E5EAF0
oklch(93.5% 0.01 252.8)
-
Step 200
200
#D1DAE4
oklch(88.4% 0.017 250.9)
-
Step 300
300
#B2C3D4
oklch(81% 0.03 248.2)
-
Step 400
400
#8AA4BE
oklch(70.8% 0.048 248.5)
-
Step 500
500
#6C8DAE
oklch(63.1% 0.062 248.8)
-
Step 600
600
#547799
oklch(55.7% 0.067 248.4)
-
Step 700
700
#446483
oklch(49.2% 0.062 248.4)
-
Step 800
800
#38516A
oklch(42.6% 0.052 249.1)
-
Step 900
900
#314456
oklch(37.8% 0.039 247.5)
-
Step 950
950 (this color)
#1D2833
oklch(27.2% 0.026 248.8)
#1D2833 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) | #242834 | 0.012 |
| Deuteranopia (no green cones) | #212633 | 0.009 |
| Tritanopia (no blue cones) | #162B2C | 0.022 |
| Achromatopsia (no color) | #272727 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D2833
#1D2833
oklch(27.2% 0.026 248.8)
- #2F2519
#2F2519
oklch(27.2% 0.026 71.5)
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 #1D2833, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.014
- Oxford Blue #1B263B ΔE 0.019
- Jet #212529 ΔE 0.019
- Space Cadet #2B2D42 ΔE 0.039
- Gunmetal #293241 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.055
- Midnight Green #073B4C ΔE 0.068
- Prussian Blue #1D3557 ΔE 0.070
Use #1D2833 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.