#153D3B
Closest named color: Midnight Green (#073B4C). oklch(33.1% 0.045 190.7), rgb(21, 61, 59).
Aa
White text reads best on this color (11.91:1).
About this color
#153D3B is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.045 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.034 away. White text reads best on it, at 11.91:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.76:1 |
| White text | 11.91:1 |
Values
| HEX | #153D3B |
| RGB | rgb(21, 61, 59) |
| HSL | hsl(177, 49%, 16%) |
| OKLCH | oklch(33.1% 0.045 190.7) |
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 #153D3B | 11.91:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #153D3B | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #153D3B text on white | 11.91:1 | AAA | Lc 97.1 | Preferred for body text |
| #153D3B text on black | 1.76:1 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#A9C8C6
oklch(80.9% 0.033 191.7)
-
Step 400
400
#79ACA8
oklch(70.7% 0.054 189.9)
-
Step 500
500
#549793
oklch(63.1% 0.069 190.6)
-
Step 600
600
#36817D
oklch(55.5% 0.074 190.5)
-
Step 700
700
#276D6A
oklch(49% 0.069 191.2)
-
Step 800
800
#225956
oklch(42.7% 0.058 190.3)
-
Step 900
900 (this color)
#153D3B
oklch(33.1% 0.045 190.7)
-
Step 950
950
#152B2A
oklch(27% 0.028 191.9)
#153D3B 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) | #393A3B | 0.047 |
| Deuteranopia (no green cones) | #33353B | 0.044 |
| Tritanopia (no blue cones) | #003F3C | 0.013 |
| Achromatopsia (no color) | #373737 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #153D3B
#153D3B
oklch(33.1% 0.045 190.7)
- #4A2C30
#4A2C30
oklch(33.2% 0.045 11.1)
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 #153D3B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.038
- Onyx #343A40 ΔE 0.042
- Gunmetal #293241 ΔE 0.047
- Charcoal #264653 ΔE 0.052
- Evergreen #05472A ΔE 0.053
- Pakistan Green #283618 ΔE 0.054
- Dark Teal #014D4E ΔE 0.054
Use #153D3B 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.