#1F232D
Closest named color: Dark (#1B2431). oklch(25.7% 0.02 267.9), rgb(31, 35, 45).
Aa
White text reads best on this color (15.71:1).
About this color
#1F232D is a dark close to neutral grey. In OKLCH its lightness is 26%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.009 away. White text reads best on it, at 15.71:1.
| Hue family | Neutrals |
| Lightness | dark (26%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.33:1 |
| White text | 15.71:1 |
Values
| HEX | #1F232D |
| RGB | rgb(31, 35, 45) |
| HSL | hsl(223, 18%, 15%) |
| OKLCH | oklch(25.7% 0.02 267.9) |
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 #1F232D | 15.71:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #1F232D | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #1F232D text on white | 15.71:1 | AAA | Lc 102.7 | Preferred for body text |
| #1F232D 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#BAC0D0
oklch(80.8% 0.023 269.4)
-
Step 400
400
#96A0B9
oklch(70.6% 0.038 268.1)
-
Step 500
500
#7D89A7
oklch(63.1% 0.047 267.9)
-
Step 600
600
#667393
oklch(55.7% 0.052 267.5)
-
Step 700
700
#55607D
oklch(49.1% 0.049 268.4)
-
Step 800
800
#454E65
oklch(42.5% 0.04 268)
-
Step 900
900
#3A4153
oklch(37.6% 0.032 268.2)
-
Step 950
950 (this color)
#1F232D
oklch(25.7% 0.02 267.9)
#1F232D 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) | #20242D | 0.004 |
| Deuteranopia (no green cones) | #1F222D | 0.004 |
| Tritanopia (no blue cones) | #1B2526 | 0.019 |
| Achromatopsia (no color) | #232323 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F232D
#1F232D
oklch(25.7% 0.02 267.9)
- #272318
#272318
oklch(25.7% 0.02 90.4)
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 #1F232D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.009
- Jet #212529 ΔE 0.013
- Oxford Blue #1B263B ΔE 0.026
- Rich Black #0D1B2A ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.052
- Gunmetal #293241 ΔE 0.060
- Dark Brown #341C02 ΔE 0.073
- Midnight Green #073B4C ΔE 0.086
Use #1F232D 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.