#1C212F
Closest named color: Dark (#1B2431). oklch(24.9% 0.028 269.1), rgb(28, 33, 47).
Aa
White text reads best on this color (16.05:1).
About this color
#1C212F is a very dark close to neutral grey. In OKLCH its lightness is 25%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.010 away. White text reads best on it, at 16.05:1.
| Hue family | Neutrals |
| Lightness | very dark (25%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.30:1 |
| White text | 16.05:1 |
Values
| HEX | #1C212F |
| RGB | rgb(28, 33, 47) |
| HSL | hsl(224, 25%, 15%) |
| OKLCH | oklch(24.9% 0.028 269.1) |
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 #1C212F | 16.05:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #1C212F | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #1C212F text on white | 16.05:1 | AAA | Lc 103.0 | Preferred for body text |
| #1C212F text on black | 1.30:1 | 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
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B8C0D7
oklch(80.9% 0.034 270.4)
-
Step 400
400
#93A0C2
oklch(70.7% 0.052 268.6)
-
Step 500
500
#7988B3
oklch(63.1% 0.067 269.5)
-
Step 600
600
#62729F
oklch(55.7% 0.073 268.9)
-
Step 700
700
#515F88
oklch(49.1% 0.068 269.3)
-
Step 800
800
#424E6E
oklch(42.7% 0.056 268.2)
-
Step 900
900
#384159
oklch(37.8% 0.043 268.4)
-
Step 950
950 (this color)
#1C212F
oklch(24.9% 0.028 269.1)
#1C212F 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) | #1D2230 | 0.004 |
| Deuteranopia (no green cones) | #1B212F | 0.002 |
| Tritanopia (no blue cones) | #172426 | 0.025 |
| Achromatopsia (no color) | #212121 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C212F
#1C212F
oklch(24.9% 0.028 269.1)
- #272112
#272112
oklch(25% 0.027 88.5)
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 #1C212F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.010
- Jet #212529 ΔE 0.023
- Oxford Blue #1B263B ΔE 0.025
- Rich Black #0D1B2A ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.057
- Gunmetal #293241 ΔE 0.066
- Dark Brown #341C02 ΔE 0.080
- Rich Navy #001219 ΔE 0.084
Use #1C212F 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.