#00A4B4
Closest named color: Turquoise Blue (#06B1C4). oklch(65.7% 0.113 207), rgb(0, 164, 180).
Aa
Black text reads best on this color (6.96:1).
About this color
#00A4B4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.113 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.040 away. Black text reads best on it, at 6.96:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 6.96:1 |
| White text | 3.01:1 |
Values
| HEX | #00A4B4 |
| RGB | rgb(0, 164, 180) |
| HSL | hsl(185, 100%, 35%) |
| OKLCH | oklch(65.7% 0.113 207) |
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 #00A4B4 | 3.01:1 | AA large text | Lc -61.6 | Content text, not long reading |
| Black text on #00A4B4 | 6.96:1 | AA | Lc 47.8 | Large or bold text, headings |
| #00A4B4 text on white | 3.01:1 | AA large text | Lc 56.2 | Large or bold text, headings |
| #00A4B4 text on black | 6.96:1 | AA | Lc -45.6 | 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 500.
-
Step 50
50
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DEEDEF
oklch(93.6% 0.016 206.4)
-
Step 200
200
#C3DFE3
oklch(88.4% 0.03 207.1)
-
Step 300
300
#97CBD3
oklch(80.9% 0.055 207.9)
-
Step 400
400
#55B0BC
oklch(70.6% 0.088 206.9)
-
Step 500
500 (this color)
#00A4B4
oklch(65.7% 0.113 207)
-
Step 600
600
#008390
oklch(55.7% 0.096 207)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#002D32
oklch(27.1% 0.046 206.3)
#00A4B4 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) | #949DB5 | 0.108 |
| Deuteranopia (no green cones) | #808EB4 | 0.100 |
| Tritanopia (no blue cones) | #00ACA9 | 0.033 |
| Achromatopsia (no color) | #959595 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00A4B4
#00A4B4
oklch(65.7% 0.113 207)
- #CD756B
#CD756B
oklch(65.7% 0.112 27.4)
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 #00A4B4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.040
- Cadet Blue #5F9EA0 ΔE 0.049
- Light Sea Green #20B2AA ΔE 0.050
- Sea #3C9992 ΔE 0.051
- Persian Green #2A9D8F ΔE 0.053
- Blue Green #0F9B8E ΔE 0.057
- Teal Green #0A9396 ΔE 0.059
- Dull Teal #5F9E8F ΔE 0.063
Use #00A4B4 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.