#1B905F
Closest named color: Viridian (#1E9167). oklch(58% 0.125 159.3), rgb(27, 144, 95).
Aa
Black text reads best on this color (5.20:1).
About this color
#1B905F is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.125 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.011 away. Black text reads best on it, at 5.20:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.125) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.20:1 |
| White text | 4.03:1 |
Values
| HEX | #1B905F |
| RGB | rgb(27, 144, 95) |
| HSL | hsl(155, 68%, 34%) |
| OKLCH | oklch(58% 0.125 159.3) |
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 #1B905F | 4.03:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #1B905F | 5.20:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #1B905F text on white | 4.03:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #1B905F text on black | 5.20:1 | AA | Lc -34.5 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E1EDE6
oklch(93.5% 0.016 160.6)
-
Step 200
200
#C9E0D2
oklch(88.6% 0.031 159)
-
Step 300
300
#A2CCB4
oklch(80.8% 0.056 159.8)
-
Step 400
400
#6DB28D
oklch(70.7% 0.089 159.5)
-
Step 500
500
#3F9E70
oklch(63% 0.114 159.3)
-
Step 600
600 (this color)
#1B905F
oklch(58% 0.125 159.3)
-
Step 700
700
#007349
oklch(49% 0.112 159.4)
-
Step 800
800
#045E3B
oklch(42.6% 0.096 159.2)
-
Step 900
900
#134D33
oklch(37.6% 0.074 159.7)
-
Step 950
950
#0E2D1E
oklch(26.9% 0.047 159.7)
#1B905F 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) | #8E845C | 0.116 |
| Deuteranopia (no green cones) | #817A62 | 0.115 |
| Tritanopia (no blue cones) | #008F83 | 0.054 |
| Achromatopsia (no color) | #7E7E7E | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B905F
#1B905F
oklch(58% 0.125 159.3)
- #A95A92
#A95A92
oklch(57.9% 0.125 339.2)
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 #1B905F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.011
- Sea Green #2E8B57 ΔE 0.016
- Light Forest Green #4F9153 ΔE 0.035
- Ocean Green #3D9973 ΔE 0.043
- Fern Green #548D44 ΔE 0.044
- Dark Sage #598556 ΔE 0.050
- Jungle Green #048243 ΔE 0.051
- Kelley Green #009337 ΔE 0.054
Use #1B905F 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.