#1B5B48
Closest named color: Dark Green Blue (#1F6357). oklch(42.5% 0.072 169.5), rgb(27, 91, 72).
Aa
White text reads best on this color (7.96:1).
About this color
#1B5B48 is a dark, moderately saturated green. In OKLCH its lightness is 43%, its chroma 0.072 and its hue 170°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.031 away. White text reads best on it, at 7.96:1.
| Hue family | Greens |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.63:1 |
| White text | 7.96:1 |
Values
| HEX | #1B5B48 |
| RGB | rgb(27, 91, 72) |
| HSL | hsl(162, 54%, 23%) |
| OKLCH | oklch(42.5% 0.072 169.5) |
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 #1B5B48 | 7.96:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #1B5B48 | 2.63:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #1B5B48 text on white | 7.96:1 | AAA | Lc 87.3 | Fine for body text |
| #1B5B48 text on black | 2.63:1 | Fails | Lc -14.8 | 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
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CBDED6
oklch(88.4% 0.023 168.7)
-
Step 300
300
#A7CABC
oklch(80.9% 0.042 169)
-
Step 400
400
#76AF9A
oklch(70.8% 0.067 169.3)
-
Step 500
500
#4E9A81
oklch(63% 0.085 169.8)
-
Step 600
600
#2C856A
oklch(55.6% 0.094 169.1)
-
Step 700
700
#1D7059
oklch(49% 0.086 170.1)
-
Step 800
800 (this color)
#1B5B48
oklch(42.5% 0.072 169.5)
-
Step 900
900
#1E4B3D
oklch(37.7% 0.056 170.2)
-
Step 950
950
#132C24
oklch(27% 0.035 170.7)
#1B5B48 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) | #585547 | 0.072 |
| Deuteranopia (no green cones) | #504E49 | 0.071 |
| Tritanopia (no blue cones) | #005C56 | 0.023 |
| Achromatopsia (no color) | #515151 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5B48
#1B5B48
oklch(42.5% 0.072 169.5)
- #6C3D54
#6C3D54
oklch(42.5% 0.073 349.9)
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 #1B5B48, 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
- Spruce #0A5F38 ΔE 0.033
- Pine #2B5D34 ΔE 0.034
- Dark Blue Green #005249 ΔE 0.035
- Deep Teal #00555A ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.047
- Petrol #005F6A ΔE 0.053
- Dark Teal #014D4E ΔE 0.055
Use #1B5B48 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.