#12212D
Closest named color: Dark (#1B2431). oklch(24% 0.031 243.7), rgb(18, 33, 45).
Aa
White text reads best on this color (16.39:1).
About this color
#12212D is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.031 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.019 away. White text reads best on it, at 16.39:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.28:1 |
| White text | 16.39:1 |
Values
| HEX | #12212D |
| RGB | rgb(18, 33, 45) |
| HSL | hsl(207, 43%, 12%) |
| OKLCH | oklch(24% 0.031 243.7) |
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 #12212D | 16.39:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #12212D | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #12212D text on white | 16.39:1 | AAA | Lc 103.3 | Preferred for body text |
| #12212D text on black | 1.28:1 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#ADC4D7
oklch(80.9% 0.037 243.1)
-
Step 400
400
#82A5C3
oklch(70.7% 0.059 244.6)
-
Step 500
500
#618FB4
oklch(63.2% 0.075 243.6)
-
Step 600
600
#4779A0
oklch(55.7% 0.082 243.5)
-
Step 700
700
#386589
oklch(49.1% 0.076 244.4)
-
Step 800
800
#2F536F
oklch(42.8% 0.063 243.5)
-
Step 900
900
#2A455A
oklch(37.8% 0.049 243)
-
Step 950
950 (this color)
#12212D
oklch(24% 0.031 243.7)
#12212D 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) | #1C212E | 0.016 |
| Deuteranopia (no green cones) | #181E2D | 0.013 |
| Tritanopia (no blue cones) | #062425 | 0.026 |
| Achromatopsia (no color) | #1F1F1F | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12212D
#12212D
oklch(24% 0.031 243.7)
- #2A1C0F
#2A1C0F
oklch(24% 0.032 63.3)
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 #12212D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.019
- Rich Black #0D1B2A ΔE 0.024
- Jet #212529 ΔE 0.031
- Oxford Blue #1B263B ΔE 0.033
- Space Cadet #2B2D42 ΔE 0.068
- Rich Navy #001219 ΔE 0.072
- Gunmetal #293241 ΔE 0.076
- Navy Blue #001146 ΔE 0.080
Use #12212D 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.