#00859F
Closest named color: Teal Blue (#01889F). oklch(56.9% 0.102 218), rgb(0, 133, 159).
Aa
Black text reads best on this color (4.85:1).
About this color
#00859F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.102 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.009 away. Black text reads best on it, at 4.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #00859F |
| RGB | rgb(0, 133, 159) |
| HSL | hsl(190, 100%, 31%) |
| OKLCH | oklch(56.9% 0.102 218) |
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 #00859F | 4.32:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #00859F | 4.85:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #00859F text on white | 4.32:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #00859F text on black | 4.85:1 | AA | Lc -32.3 | 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
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C7DEE4
oklch(88.5% 0.026 215.2)
-
Step 300
300
#A0C8D5
oklch(80.8% 0.046 219.6)
-
Step 400
400
#69ACBF
oklch(70.7% 0.073 217.9)
-
Step 500
500
#3897AF
oklch(63.1% 0.094 217.8)
-
Step 600
600 (this color)
#00859F
oklch(56.9% 0.102 218)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900
#0F4957
oklch(37.6% 0.061 218.1)
-
Step 950
950
#0C2B33
oklch(27% 0.039 217.8)
#00859F 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) | #7481A0 | 0.087 |
| Deuteranopia (no green cones) | #62749F | 0.077 |
| Tritanopia (no blue cones) | #008E8D | 0.045 |
| Achromatopsia (no color) | #797979 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00859F
#00859F
oklch(56.9% 0.102 218)
- #AA6049
#AA6049
oklch(56.9% 0.103 38)
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 #00859F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.009
- Blue NCS #118AB2 ΔE 0.031
- Ocean #017B92 ΔE 0.032
- Cerulean #457B9D ΔE 0.040
- Dark Cyan #008B8B ΔE 0.041
- Nice Blue #107AB0 ΔE 0.048
- Teal #008080 ΔE 0.048
- Stormy Blue #507B9C ΔE 0.048
Use #00859F 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.