#23978A
Closest named color: Blue Green (#0F9B8E). oklch(61.2% 0.1 183.6), rgb(35, 151, 138).
Aa
Black text reads best on this color (5.86:1).
About this color
#23978A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.100 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Green (#0F9B8E), ΔE 0.012 away. Black text reads best on it, at 5.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Blue Green (#0F9B8E) |
| Black text | 5.86:1 |
| White text | 3.58:1 |
Values
| HEX | #23978A |
| RGB | rgb(35, 151, 138) |
| HSL | hsl(173, 62%, 36%) |
| OKLCH | oklch(61.2% 0.1 183.6) |
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 #23978A | 3.58:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #23978A | 5.86:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #23978A text on white | 3.58:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #23978A text on black | 5.86:1 | AA | Lc -38.7 | 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 500.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C6DFDB
oklch(88.4% 0.027 185.1)
-
Step 300
300
#9ECBC4
oklch(80.8% 0.048 184.6)
-
Step 400
400
#64B1A6
oklch(70.8% 0.079 183.9)
-
Step 500
500 (this color)
#23978A
oklch(61.2% 0.1 183.6)
-
Step 600
600
#008679
oklch(55.7% 0.099 183.1)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#044D45
oklch(37.8% 0.066 182.9)
-
Step 950
950
#082D29
oklch(27% 0.041 184.8)
#23978A 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) | #8F8E8A | 0.106 |
| Deuteranopia (no green cones) | #80828B | 0.102 |
| Tritanopia (no blue cones) | #009A93 | 0.014 |
| Achromatopsia (no color) | #878787 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23978A
#23978A
oklch(61.2% 0.1 183.6)
- #B6697D
#B6697D
oklch(61.2% 0.101 3.8)
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 #23978A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Green #0F9B8E ΔE 0.012
- Persian Green #2A9D8F ΔE 0.019
- Sea #3C9992 ΔE 0.020
- Teal Green #0A9396 ΔE 0.026
- Dusty Teal #4C9085 ΔE 0.029
- Ocean Green #3D9973 ΔE 0.037
- Dark Cyan #008B8B ΔE 0.040
- Grey Teal #5E9B8A ΔE 0.046
Use #23978A 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.