#183B34
Closest named color: Pakistan Green (#283618). oklch(32.4% 0.043 178.6), rgb(24, 59, 52).
Aa
White text reads best on this color (12.25:1).
About this color
#183B34 is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.043 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Pakistan Green (#283618), ΔE 0.042 away. White text reads best on it, at 12.25:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Pakistan Green (#283618) |
| Black text | 1.71:1 |
| White text | 12.25:1 |
Values
| HEX | #183B34 |
| RGB | rgb(24, 59, 52) |
| HSL | hsl(168, 42%, 16%) |
| OKLCH | oklch(32.4% 0.043 178.6) |
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 #183B34 | 12.25:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #183B34 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #183B34 text on white | 12.25:1 | AAA | Lc 97.8 | Preferred for body text |
| #183B34 text on black | 1.71:1 | 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 900.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CDDDD9
oklch(88.4% 0.018 179.3)
-
Step 300
300
#ACC8C1
oklch(81% 0.032 178.7)
-
Step 400
400
#7EACA1
oklch(70.8% 0.052 178.3)
-
Step 500
500
#5B978A
oklch(63.1% 0.066 178.7)
-
Step 600
600
#3F8174
oklch(55.6% 0.071 179)
-
Step 700
700
#306D61
oklch(49.1% 0.066 178.7)
-
Step 800
800
#29594F
oklch(42.7% 0.055 178.1)
-
Step 900
900 (this color)
#183B34
oklch(32.4% 0.043 178.6)
-
Step 950
950
#172B27
oklch(27.1% 0.027 180)
#183B34 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) | #393734 | 0.046 |
| Deuteranopia (no green cones) | #333335 | 0.044 |
| Tritanopia (no blue cones) | #063C39 | 0.013 |
| Achromatopsia (no color) | #353535 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #183B34
#183B34
oklch(32.4% 0.043 178.6)
- #462A33
#462A33
oklch(32.3% 0.044 359)
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 #183B34, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pakistan Green #283618 ΔE 0.042
- Midnight Green #073B4C ΔE 0.044
- Onyx #343A40 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.047
- Gunmetal #293241 ΔE 0.049
- Evergreen #05472A ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.060
- Charcoal #264653 ΔE 0.062
Use #183B34 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.