#04BCCB
Closest named color: Turquoise Blue (#06B1C4). oklch(72.6% 0.124 205), rgb(4, 188, 203).
Aa
Black text reads best on this color (9.06:1).
About this color
#04BCCB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.124 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.031 away. Black text reads best on it, at 9.06:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 9.06:1 |
| White text | 2.31:1 |
Values
| HEX | #04BCCB |
| RGB | rgb(4, 188, 203) |
| HSL | hsl(185, 96%, 41%) |
| OKLCH | oklch(72.6% 0.124 205) |
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 #04BCCB | 2.31:1 | Fails | Lc -49.9 | Large or bold text, headings |
| Black text on #04BCCB | 9.06:1 | AAA | Lc 58.9 | Large or bold text, headings |
| #04BCCB text on white | 2.31:1 | Fails | Lc 45.1 | Large or bold text, headings |
| #04BCCB text on black | 9.06:1 | AAA | Lc -57.1 | 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
#EEF8F9
oklch(97.2% 0.011 204.1)
-
Step 100
100
#DAEFF1
oklch(93.7% 0.022 203.7)
-
Step 200
200
#B9E2E7
oklch(88.5% 0.043 205.5)
-
Step 300
300
#82CFD8
oklch(80.8% 0.077 205.2)
-
Step 400
400 (this color)
#04BCCB
oklch(72.6% 0.124 205)
-
Step 500
500
#009CA8
oklch(63.2% 0.108 204.4)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#04BCCB 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) | #ABB4CC | 0.121 |
| Deuteranopia (no green cones) | #94A3CB | 0.111 |
| Tritanopia (no blue cones) | #00C5C0 | 0.035 |
| Achromatopsia (no color) | #AAAAAA | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04BCCB
#04BCCB
oklch(72.6% 0.124 205)
- #EA867F
#EA867F
oklch(72.6% 0.124 24.8)
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 #04BCCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.031
- Topaz #13BBAF ΔE 0.041
- Light Sea Green #20B2AA ΔE 0.049
- Dark Turquoise #00CED1 ΔE 0.050
- Medium Turquoise #48D1CC ΔE 0.068
- Vivid Sky Blue #4CC9F0 ΔE 0.068
- Greeny Blue #42B395 ΔE 0.074
- Deep Sky Blue #00BFFF ΔE 0.076
Use #04BCCB 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.