#00839B
Closest named color: Teal Blue (#01889F). oklch(56.2% 0.1 216.6), rgb(0, 131, 155).
Aa
Black text reads best on this color (4.71:1).
About this color
#00839B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.100 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.015 away. Black text reads best on it, at 4.71:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.71:1 |
| White text | 4.44:1 |
Values
| HEX | #00839B |
| RGB | rgb(0, 131, 155) |
| HSL | hsl(189, 100%, 30%) |
| OKLCH | oklch(56.2% 0.1 216.6) |
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 #00839B | 4.44:1 | AA large text | Lc -75.8 | Fine for body text |
| Black text on #00839B | 4.71:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #00839B text on white | 4.44:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #00839B text on black | 4.71:1 | AA | Lc -31.4 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C8DEE4
oklch(88.6% 0.025 215.9)
-
Step 300
300
#A1C8D4
oklch(80.9% 0.045 218.5)
-
Step 400
400
#6AACBE
oklch(70.7% 0.072 217.1)
-
Step 500
500
#3A97AD
oklch(63.1% 0.092 216.3)
-
Step 600
600 (this color)
#00839B
oklch(56.2% 0.1 216.6)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#104956
oklch(37.6% 0.06 216.8)
-
Step 950
950
#0C2B32
oklch(27% 0.038 215.2)
#00839B 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) | #737F9C | 0.087 |
| Deuteranopia (no green cones) | #61729B | 0.077 |
| Tritanopia (no blue cones) | #008B8B | 0.040 |
| Achromatopsia (no color) | #777777 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00839B
#00839B
oklch(56.2% 0.1 216.6)
- #A75E4A
#A75E4A
oklch(56.1% 0.101 36.2)
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 #00839B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.015
- Ocean #017B92 ΔE 0.025
- Blue NCS #118AB2 ΔE 0.038
- Cerulean #457B9D ΔE 0.040
- Dark Cyan #008B8B ΔE 0.040
- Teal #008080 ΔE 0.042
- Sea Blue #047495 ΔE 0.045
- Nice Blue #107AB0 ΔE 0.048
Use #00839B 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.