#133F37
Closest named color: Evergreen (#05472A). oklch(33.5% 0.05 178.9), rgb(19, 63, 55).
Aa
White text reads best on this color (11.70:1).
About this color
#133F37 is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.050 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Evergreen (#05472A), ΔE 0.041 away. White text reads best on it, at 11.70:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Evergreen (#05472A) |
| Black text | 1.79:1 |
| White text | 11.70:1 |
Values
| HEX | #133F37 |
| RGB | rgb(19, 63, 55) |
| HSL | hsl(169, 54%, 16%) |
| OKLCH | oklch(33.5% 0.05 178.9) |
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 #133F37 | 11.70:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #133F37 | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #133F37 text on white | 11.70:1 | AAA | Lc 96.7 | Preferred for body text |
| #133F37 text on black | 1.79:1 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CBDED9
oklch(88.5% 0.021 178.3)
-
Step 300
300
#A8C9C1
oklch(80.9% 0.037 179)
-
Step 400
400
#77ADA1
oklch(70.6% 0.06 179.1)
-
Step 500
500
#50998A
oklch(63.1% 0.077 178.7)
-
Step 600
600
#308374
oklch(55.5% 0.083 179)
-
Step 700
700
#216F61
oklch(49.1% 0.078 178.5)
-
Step 800
800
#1E5A50
oklch(42.6% 0.064 180.1)
-
Step 900
900 (this color)
#133F37
oklch(33.5% 0.05 178.9)
-
Step 950
950
#142C27
oklch(27.2% 0.032 178.7)
#133F37 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) | #3C3B37 | 0.053 |
| Deuteranopia (no green cones) | #363638 | 0.051 |
| Tritanopia (no blue cones) | #00403D | 0.013 |
| Achromatopsia (no color) | #383838 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #133F37
#133F37
oklch(33.5% 0.05 178.9)
- #4C2B36
#4C2B36
oklch(33.5% 0.051 358.8)
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 #133F37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Evergreen #05472A ΔE 0.041
- Midnight Green #073B4C ΔE 0.044
- Onyx #343A40 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.048
- Pakistan Green #283618 ΔE 0.049
- Dark Teal #014D4E ΔE 0.051
- Charcoal #264653 ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.057
Use #133F37 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.