#23B577
Closest named color: Dark Seafoam (#1FB57A). oklch(68.5% 0.149 158.9), rgb(35, 181, 119).
Aa
Black text reads best on this color (7.94:1).
About this color
#23B577 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.149 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam (#1FB57A), ΔE 0.004 away. Black text reads best on it, at 7.94:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Dark Seafoam (#1FB57A) |
| Black text | 7.94:1 |
| White text | 2.64:1 |
Values
| HEX | #23B577 |
| RGB | rgb(35, 181, 119) |
| HSL | hsl(155, 68%, 42%) |
| OKLCH | oklch(68.5% 0.149 158.9) |
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 #23B577 | 2.64:1 | Fails | Lc -56.1 | Large or bold text, headings |
| Black text on #23B577 | 7.94:1 | AAA | Lc 53.1 | Large or bold text, headings |
| #23B577 text on white | 2.64:1 | Fails | Lc 51.0 | Large or bold text, headings |
| #23B577 text on black | 7.94:1 | AAA | Lc -50.9 | 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
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DCF0E3
oklch(93.7% 0.027 157.4)
-
Step 200
200
#BDE4CD
oklch(88.5% 0.051 159.3)
-
Step 300
300
#8BD3AB
oklch(80.8% 0.092 159.1)
-
Step 400
400 (this color)
#23B577
oklch(68.5% 0.149 158.9)
-
Step 500
500
#00A368
oklch(63.1% 0.145 158.9)
-
Step 600
600
#008957
oklch(55.5% 0.128 159.1)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3A
oklch(42.8% 0.099 158.5)
-
Step 900
900
#004F30
oklch(37.7% 0.087 158.9)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#23B577 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) | #B3A673 | 0.139 |
| Deuteranopia (no green cones) | #A29A7B | 0.135 |
| Tritanopia (no blue cones) | #00B4A5 | 0.066 |
| Achromatopsia (no color) | #9F9F9F | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23B577
#23B577
oklch(68.5% 0.149 158.9)
- #D472B8
#D472B8
oklch(68.5% 0.149 339)
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 #23B577, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam #1FB57A ΔE 0.004
- Green Teal #0CB577 ΔE 0.005
- Medium Sea Green #3CB371 ΔE 0.011
- Bluey Green #2BB179 ΔE 0.013
- Dark Seafoam Green #3EAF76 ΔE 0.019
- Jade Green #2BAF6A ΔE 0.020
- Seaweed Green #35AD6B ΔE 0.023
- Cool Green #33B864 ΔE 0.028
Use #23B577 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.