#04A5CC
Closest named color: Turquoise Blue (#06B1C4). oklch(67% 0.124 222.7), rgb(4, 165, 204).
Aa
Black text reads best on this color (7.25:1).
About this color
#04A5CC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.124 and its hue 223°. 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 7.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.25:1 |
| White text | 2.89:1 |
Values
| HEX | #04A5CC |
| RGB | rgb(4, 165, 204) |
| HSL | hsl(192, 96%, 41%) |
| OKLCH | oklch(67% 0.124 222.7) |
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 #04A5CC | 2.89:1 | Fails | Lc -59.9 | Large or bold text, headings |
| Black text on #04A5CC | 7.25:1 | AAA | Lc 49.5 | Large or bold text, headings |
| #04A5CC text on white | 2.89:1 | Fails | Lc 54.6 | Large or bold text, headings |
| #04A5CC text on black | 7.25:1 | AAA | Lc -47.2 | 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
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#DBEEF5
oklch(93.7% 0.022 221.8)
-
Step 200
200
#BBE0EE
oklch(88.5% 0.043 222.8)
-
Step 300
300
#87CCE5
oklch(80.8% 0.078 222.8)
-
Step 400
400 (this color)
#04A5CC
oklch(67% 0.124 222.7)
-
Step 500
500
#0098BD
oklch(63.1% 0.118 223.1)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#002B38
oklch(26.8% 0.05 223.6)
#04A5CC 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) | #8EA1CE | 0.097 |
| Deuteranopia (no green cones) | #7891CC | 0.086 |
| Tritanopia (no blue cones) | #00B1B2 | 0.060 |
| Achromatopsia (no color) | #989898 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04A5CC
#04A5CC
oklch(67% 0.124 222.7)
- #D47A55
#D47A55
oklch(67.1% 0.124 42.7)
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 #04A5CC, 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 0.071
- Greyblue #77A1B5 ΔE 0.072
- Light Sea Green #20B2AA ΔE 0.073
- Faded Blue #658CBB ΔE 0.078
- Blue NCS #118AB2 ΔE 0.079
- Chefchaouen Blue #4895EF ΔE 0.081
- Dark Sky Blue #448EE4 ΔE 0.083
Use #04A5CC 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.