#01899C
Closest named color: Teal Blue (#01889F). oklch(57.8% 0.1 211.7), rgb(1, 137, 156).
Aa
Black text reads best on this color (5.05:1).
About this color
#01899C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.100 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.006 away. Black text reads best on it, at 5.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #01899C |
| RGB | rgb(1, 137, 156) |
| HSL | hsl(187, 99%, 31%) |
| OKLCH | oklch(57.8% 0.1 211.7) |
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 #01899C | 4.15:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #01899C | 5.05:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #01899C text on white | 4.15:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #01899C text on black | 5.05:1 | AA | Lc -33.7 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C7DEE3
oklch(88.5% 0.025 212.2)
-
Step 300
300
#A0C9D2
oklch(80.9% 0.045 212.6)
-
Step 400
400
#68ADBB
oklch(70.7% 0.073 212)
-
Step 500
500
#3698AA
oklch(63.1% 0.093 212.1)
-
Step 600
600 (this color)
#01899C
oklch(57.8% 0.1 211.7)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005966
oklch(42.6% 0.074 211.8)
-
Step 900
900
#0D4A54
oklch(37.7% 0.06 211.5)
-
Step 950
950
#0B2B31
oklch(26.9% 0.038 212.2)
#01899C 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) | #7A849D | 0.092 |
| Deuteranopia (no green cones) | #68779C | 0.083 |
| Tritanopia (no blue cones) | #00918F | 0.036 |
| Achromatopsia (no color) | #7C7C7C | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01899C
#01899C
oklch(57.8% 0.1 211.7)
- #AD6254
#AD6254
oklch(57.8% 0.1 31.5)
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 #01899C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.006
- Dark Cyan #008B8B ΔE 0.029
- Teal Green #0A9396 ΔE 0.035
- Blue NCS #118AB2 ΔE 0.035
- Ocean #017B92 ΔE 0.042
- Teal #008080 ΔE 0.046
- Cerulean #457B9D ΔE 0.050
- Stormy Blue #507B9C ΔE 0.056
Use #01899C 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.