#04857B
Closest named color: Teal (#008080). oklch(55.5% 0.097 185.6), rgb(4, 133, 123).
Aa
Black text reads best on this color (4.64:1).
About this color
#04857B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.097 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.020 away. Black text reads best on it, at 4.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.64:1 |
| White text | 4.51:1 |
Values
| HEX | #04857B |
| RGB | rgb(4, 133, 123) |
| HSL | hsl(175, 94%, 27%) |
| OKLCH | oklch(55.5% 0.097 185.6) |
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 #04857B | 4.51:1 | AA | Lc -76.3 | Fine for body text |
| Black text on #04857B | 4.64:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #04857B text on white | 4.51:1 | AA | Lc 70.8 | Content text, not long reading |
| #04857B text on black | 4.64:1 | AA | Lc -30.8 | 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 600.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C8DFDB
oklch(88.5% 0.025 184.2)
-
Step 300
300
#A2CAC4
oklch(80.8% 0.043 185.2)
-
Step 400
400
#6CAFA7
oklch(70.7% 0.069 186.1)
-
Step 500
500
#3D9B91
oklch(63.1% 0.089 185.5)
-
Step 600
600 (this color)
#04857B
oklch(55.5% 0.097 185.6)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#025C55
oklch(42.7% 0.074 185.8)
-
Step 900
900
#124B46
oklch(37.6% 0.058 186.5)
-
Step 950
950
#0E2C29
oklch(26.9% 0.036 186.4)
#04857B 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) | #7D7D7B | 0.102 |
| Deuteranopia (no green cones) | #6E727C | 0.096 |
| Tritanopia (no blue cones) | #008882 | 0.012 |
| Achromatopsia (no color) | #767676 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04857B
#04857B
oklch(55.5% 0.097 185.6)
- #A25A6B
#A25A6B
oklch(55.6% 0.096 5.5)
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 #04857B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.020
- Dark Cyan #008B8B ΔE 0.027
- Bluegreen #017A79 ΔE 0.034
- Deep Aqua #08787F ΔE 0.043
- Teal Green #0A9396 ΔE 0.052
- Ocean #017B92 ΔE 0.055
- Dark Aquamarine #017371 ΔE 0.055
- Deep Turquoise #017374 ΔE 0.055
Use #04857B 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.