#1BB37F
Closest named color: Bluey Green (#2BB179). oklch(68.1% 0.142 163.1), rgb(27, 179, 127).
Aa
Black text reads best on this color (7.80:1).
About this color
#1BB37F is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.142 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Green (#2BB179), ΔE 0.008 away. Black text reads best on it, at 7.80:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Bluey Green (#2BB179) |
| Black text | 7.80:1 |
| White text | 2.69:1 |
Values
| HEX | #1BB37F |
| RGB | rgb(27, 179, 127) |
| HSL | hsl(159, 74%, 40%) |
| OKLCH | oklch(68.1% 0.142 163.1) |
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 #1BB37F | 2.69:1 | Fails | Lc -56.9 | Large or bold text, headings |
| Black text on #1BB37F | 7.80:1 | AAA | Lc 52.3 | Large or bold text, headings |
| #1BB37F text on white | 2.69:1 | Fails | Lc 51.7 | Large or bold text, headings |
| #1BB37F text on black | 7.80:1 | AAA | Lc -50.2 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DBF0E5
oklch(93.7% 0.027 163.2)
-
Step 200
200
#BDE4D0
oklch(88.5% 0.049 163)
-
Step 300
300
#8AD3B0
oklch(80.9% 0.089 162.8)
-
Step 400
400 (this color)
#1BB37F
oklch(68.1% 0.142 163.1)
-
Step 500
500
#00A271
oklch(63% 0.136 163)
-
Step 600
600
#00895F
oklch(55.7% 0.12 163.1)
-
Step 700
700
#00734F
oklch(49.1% 0.106 163)
-
Step 800
800
#005E40
oklch(42.6% 0.092 163.1)
-
Step 900
900
#004F35
oklch(37.8% 0.082 162.9)
-
Step 950
950
#002F1E
oklch(27% 0.058 163)
#1BB37F 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) | #B0A57C | 0.138 |
| Deuteranopia (no green cones) | #9E9982 | 0.132 |
| Tritanopia (no blue cones) | #00B3A5 | 0.055 |
| Achromatopsia (no color) | #9E9E9E | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BB37F
#1BB37F
oklch(68.1% 0.142 163.1)
- #D372AF
#D372AF
oklch(68% 0.142 343.1)
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 #1BB37F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Green #2BB179 ΔE 0.008
- Dark Seafoam #1FB57A ΔE 0.010
- Green Teal #0CB577 ΔE 0.015
- Dark Seafoam Green #3EAF76 ΔE 0.017
- Medium Sea Green #3CB371 ΔE 0.021
- Seaweed Green #35AD6B ΔE 0.026
- Jade Green #2BAF6A ΔE 0.026
- Jade #1FA774 ΔE 0.035
Use #1BB37F 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.