#1B4E39
Closest named color: Dark Blue Green (#005249). oklch(38.3% 0.066 163.1), rgb(27, 78, 57).
Aa
White text reads best on this color (9.56:1).
About this color
#1B4E39 is a dark, muted green. In OKLCH its lightness is 38%, its chroma 0.066 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.025 away. White text reads best on it, at 9.56:1.
| Hue family | Greens |
| Lightness | dark (38%) |
| Chroma | muted (0.066) |
| Temperature | in between |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #1B4E39 |
| RGB | rgb(27, 78, 57) |
| HSL | hsl(155, 49%, 21%) |
| OKLCH | oklch(38.3% 0.066 163.1) |
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 #1B4E39 | 9.56:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #1B4E39 | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #1B4E39 text on white | 9.56:1 | AAA | Lc 91.9 | Preferred for body text |
| #1B4E39 text on black | 2.19:1 | Fails | Lc -10.5 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CADFD4
oklch(88.5% 0.027 163.1)
-
Step 300
300
#A5CBB8
oklch(80.9% 0.048 163.5)
-
Step 400
400
#71B093
oklch(70.6% 0.078 163.7)
-
Step 500
500
#479D78
oklch(63.2% 0.101 162.9)
-
Step 600
600
#208761
oklch(55.6% 0.109 163.3)
-
Step 700
700
#0E7250
oklch(49% 0.101 163.3)
-
Step 800
800
#125D42
oklch(42.7% 0.084 163.6)
-
Step 900
900 (this color)
#1B4E39
oklch(38.3% 0.066 163.1)
-
Step 950
950
#112D21
oklch(27.1% 0.041 163.5)
#1B4E39 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) | #4D4838 | 0.065 |
| Deuteranopia (no green cones) | #45433A | 0.061 |
| Tritanopia (no blue cones) | #024E48 | 0.026 |
| Achromatopsia (no color) | #454545 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B4E39
#1B4E39
oklch(38.3% 0.066 163.1)
- #5B344C
#5B344C
oklch(38.2% 0.066 343.1)
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 #1B4E39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.025
- Evergreen #05472A ΔE 0.035
- Dark Teal #014D4E ΔE 0.037
- Pine Green #0A481E ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.044
- Deep Teal #00555A ΔE 0.052
- Pine #2B5D34 ΔE 0.057
- Spruce #0A5F38 ΔE 0.057
Use #1B4E39 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.