#135B4A
Closest named color: Dark Green Blue (#1F6357). oklch(42.4% 0.074 172.9), rgb(19, 91, 74).
Aa
White text reads best on this color (8.00:1).
About this color
#135B4A is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 42%, its chroma 0.074 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.031 away. White text reads best on it, at 8.00:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #135B4A |
| RGB | rgb(19, 91, 74) |
| HSL | hsl(166, 65%, 22%) |
| OKLCH | oklch(42.4% 0.074 172.9) |
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 #135B4A | 8.00:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #135B4A | 2.62:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #135B4A text on white | 8.00:1 | AAA | Lc 87.4 | Fine for body text |
| #135B4A text on black | 2.62:1 | Fails | Lc -14.7 | 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 800.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CADFD7
oklch(88.6% 0.025 170.9)
-
Step 300
300
#A5CABE
oklch(80.9% 0.043 173.5)
-
Step 400
400
#72AF9C
oklch(70.7% 0.069 172.6)
-
Step 500
500
#489B84
oklch(63.1% 0.089 172.7)
-
Step 600
600
#22856E
oklch(55.5% 0.096 173.4)
-
Step 700
700
#12715C
oklch(49.2% 0.089 173.1)
-
Step 800
800 (this color)
#135B4A
oklch(42.4% 0.074 172.9)
-
Step 900
900
#1A4B3E
oklch(37.5% 0.057 172.7)
-
Step 950
950
#112C25
oklch(26.9% 0.036 174.4)
#135B4A 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) | #585549 | 0.077 |
| Deuteranopia (no green cones) | #4E4E4B | 0.072 |
| Tritanopia (no blue cones) | #005C56 | 0.019 |
| Achromatopsia (no color) | #505050 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #135B4A
#135B4A
oklch(42.4% 0.074 172.9)
- #6D3C52
#6D3C52
oklch(42.4% 0.075 352.4)
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 #135B4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.031
- Dark Blue Green #005249 ΔE 0.032
- Spruce #0A5F38 ΔE 0.035
- Pine #2B5D34 ΔE 0.038
- Deep Teal #00555A ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.047
- Petrol #005F6A ΔE 0.051
- Dark Teal #014D4E ΔE 0.052
Use #135B4A 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.