#1F232C
Closest named color: Dark (#1B2431). oklch(25.6% 0.018 266.3), rgb(31, 35, 44).
Aa
White text reads best on this color (15.72:1).
About this color
#1F232C is a dark close to neutral grey. In OKLCH its lightness is 26%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.011 away. White text reads best on it, at 15.72:1.
| Hue family | Neutrals |
| Lightness | dark (26%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.33:1 |
| White text | 15.72:1 |
Values
| HEX | #1F232C |
| RGB | rgb(31, 35, 44) |
| HSL | hsl(222, 17%, 15%) |
| OKLCH | oklch(25.6% 0.018 266.3) |
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 #1F232C | 15.72:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #1F232C | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #1F232C text on white | 15.72:1 | AAA | Lc 102.7 | Preferred for body text |
| #1F232C text on black | 1.33:1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#BAC1CF
oklch(81% 0.021 264.4)
-
Step 400
400
#97A1B7
oklch(70.8% 0.034 266.1)
-
Step 500
500
#7D89A5
oklch(63% 0.045 266.9)
-
Step 600
600
#667390
oklch(55.6% 0.048 266)
-
Step 700
700
#55607A
oklch(49% 0.044 266.9)
-
Step 800
800
#464F63
oklch(42.8% 0.035 265.9)
-
Step 900
900
#3B4151
oklch(37.6% 0.029 268.9)
-
Step 950
950 (this color)
#1F232C
oklch(25.6% 0.018 266.3)
#1F232C 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) | #20242C | 0.004 |
| Deuteranopia (no green cones) | #1F222C | 0.004 |
| Tritanopia (no blue cones) | #1C2526 | 0.016 |
| Achromatopsia (no color) | #232323 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F232C
#1F232C
oklch(25.6% 0.018 266.3)
- #272319
#272319
oklch(25.7% 0.019 88.8)
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 #1F232C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.011
- Jet #212529 ΔE 0.011
- Oxford Blue #1B263B ΔE 0.028
- Rich Black #0D1B2A ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.053
- Gunmetal #293241 ΔE 0.060
- Dark Brown #341C02 ΔE 0.071
- Midnight Green #073B4C ΔE 0.087
Use #1F232C 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.