#12242E
Closest named color: Dark (#1B2431). oklch(25% 0.03 234.2), rgb(18, 36, 46).
Aa
White text reads best on this color (15.93:1).
About this color
#12242E is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.030 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.015 away. White text reads best on it, at 15.93:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.31:1 |
| White text | 15.93:1 |
Values
| HEX | #12242E |
| RGB | rgb(18, 36, 46) |
| HSL | hsl(201, 44%, 13%) |
| OKLCH | oklch(25% 0.03 234.2) |
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 #12242E | 15.93:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #12242E | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #12242E text on white | 15.93:1 | AAA | Lc 102.8 | Preferred for body text |
| #12242E text on black | 1.31:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE5
oklch(88.6% 0.02 233.9)
-
Step 300
300
#ABC5D5
oklch(80.9% 0.036 234.9)
-
Step 400
400
#7DA7C0
oklch(70.7% 0.058 234.8)
-
Step 500
500
#5B91B0
oklch(63.1% 0.074 234.8)
-
Step 600
600
#3F7B9B
oklch(55.6% 0.08 234)
-
Step 700
700
#306785
oklch(49% 0.075 235.1)
-
Step 800
800
#29546C
oklch(42.6% 0.062 235.3)
-
Step 900
900
#264657
oklch(37.7% 0.048 233.2)
-
Step 950
950 (this color)
#12242E
oklch(25% 0.03 234.2)
#12242E 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) | #1F242E | 0.019 |
| Deuteranopia (no green cones) | #1B212E | 0.016 |
| Tritanopia (no blue cones) | #042727 | 0.025 |
| Achromatopsia (no color) | #222222 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12242E
#12242E
oklch(25% 0.03 234.2)
- #2D1E13
#2D1E13
oklch(25.1% 0.03 57.1)
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 #12242E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.015
- Jet #212529 ΔE 0.025
- Oxford Blue #1B263B ΔE 0.029
- Rich Black #0D1B2A ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.062
- Gunmetal #293241 ΔE 0.067
- Rich Navy #001219 ΔE 0.081
- Dark Brown #341C02 ΔE 0.084
Use #12242E 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.