#00A4C5
Closest named color: Turquoise Blue (#06B1C4). oklch(66.4% 0.12 219), rgb(0, 164, 197).
Aa
Black text reads best on this color (7.11:1).
About this color
#00A4C5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.120 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.039 away. Black text reads best on it, at 7.11:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.11:1 |
| White text | 2.95:1 |
Values
| HEX | #00A4C5 |
| RGB | rgb(0, 164, 197) |
| HSL | hsl(190, 100%, 39%) |
| OKLCH | oklch(66.4% 0.12 219) |
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 #00A4C5 | 2.95:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #00A4C5 | 7.11:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #00A4C5 text on white | 2.95:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #00A4C5 text on black | 7.11:1 | AAA | Lc -46.4 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DEEDF2
oklch(93.6% 0.017 219.7)
-
Step 200
200
#C2DFE8
oklch(88.5% 0.033 218.4)
-
Step 300
300
#96CADA
oklch(80.8% 0.058 218.8)
-
Step 400
400
#53AFC8
oklch(70.8% 0.094 218.2)
-
Step 500
500 (this color)
#00A4C5
oklch(66.4% 0.12 219)
-
Step 600
600
#00819B
oklch(55.7% 0.1 218.5)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586B
oklch(42.5% 0.077 219.1)
-
Step 900
900
#004A5A
oklch(37.8% 0.068 218.5)
-
Step 950
950
#002C36
oklch(27% 0.048 217.4)
#00A4C5 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) | #8F9FC7 | 0.100 |
| Deuteranopia (no green cones) | #798FC5 | 0.090 |
| Tritanopia (no blue cones) | #00AFAF | 0.053 |
| Achromatopsia (no color) | #969696 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00A4C5
#00A4C5
oklch(66.4% 0.12 219)
- #D1785A
#D1785A
oklch(66.4% 0.12 39.3)
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 #00A4C5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.039
- Cadet Blue #5F9EA0 ΔE 0.064
- Light Sea Green #20B2AA ΔE 0.067
- Greyblue #77A1B5 ΔE 0.071
- Sea #3C9992 ΔE 0.074
- Blue NCS #118AB2 ΔE 0.074
- Teal Green #0A9396 ΔE 0.077
- Faded Blue #658CBB ΔE 0.078
Use #00A4C5 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.