#1F2933
Closest named color: Dark (#1B2431). oklch(27.6% 0.023 248.7), rgb(31, 41, 51).
Aa
White text reads best on this color (14.75:1).
About this color
#1F2933 is a dark close to neutral grey. In OKLCH its lightness is 28%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.019 away. White text reads best on it, at 14.75:1.
| Hue family | Neutrals |
| Lightness | dark (28%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.42:1 |
| White text | 14.75:1 |
Values
| HEX | #1F2933 |
| RGB | rgb(31, 41, 51) |
| HSL | hsl(210, 24%, 16%) |
| OKLCH | oklch(27.6% 0.023 248.7) |
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 #1F2933 | 14.75:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #1F2933 | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #1F2933 text on white | 14.75:1 | AAA | Lc 101.6 | Preferred for body text |
| #1F2933 text on black | 1.42:1 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B3C3D2
oklch(81% 0.028 246.4)
-
Step 400
400
#8CA3BB
oklch(70.6% 0.044 249.6)
-
Step 500
500
#6F8DAB
oklch(63.2% 0.057 248.7)
-
Step 600
600
#577796
oklch(55.7% 0.061 248.2)
-
Step 700
700
#476480
oklch(49.2% 0.057 248.2)
-
Step 800
800
#3A5168
oklch(42.6% 0.048 249)
-
Step 900
900
#324354
oklch(37.6% 0.037 248.8)
-
Step 950
950 (this color)
#1F2933
oklch(27.6% 0.023 248.7)
#1F2933 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) | #252933 | 0.010 |
| Deuteranopia (no green cones) | #232733 | 0.009 |
| Tritanopia (no blue cones) | #192B2C | 0.019 |
| Achromatopsia (no color) | #282828 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F2933
#1F2933
oklch(27.6% 0.023 248.7)
- #30261C
#30261C
oklch(27.7% 0.023 66.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #1F2933
These curated palettes and gradients contain exactly #1F2933. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.019
- Jet #212529 ΔE 0.020
- Oxford Blue #1B263B ΔE 0.022
- Space Cadet #2B2D42 ΔE 0.036
- Gunmetal #293241 ΔE 0.040
- Rich Black #0D1B2A ΔE 0.060
- Midnight Green #073B4C ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.067
Use #1F2933 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.