#01828F
Closest named color: Teal (#008080). oklch(55.5% 0.095 207.1), rgb(1, 130, 143).
Aa
Black text reads best on this color (4.59:1).
About this color
#01828F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.095 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.023 away. Black text reads best on it, at 4.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.59:1 |
| White text | 4.57:1 |
Values
| HEX | #01828F |
| RGB | rgb(1, 130, 143) |
| HSL | hsl(185, 99%, 28%) |
| OKLCH | oklch(55.5% 0.095 207.1) |
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 #01828F | 4.57:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #01828F | 4.59:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #01828F text on white | 4.57:1 | AA | Lc 71.2 | Content text, not long reading |
| #01828F text on black | 4.59:1 | AA | Lc -30.5 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C8DEE1
oklch(88.5% 0.024 206.6)
-
Step 300
300
#A1C9CF
oklch(80.9% 0.043 207.6)
-
Step 400
400
#6BADB6
oklch(70.7% 0.068 206.8)
-
Step 500
500
#3C98A4
oklch(63% 0.087 207.1)
-
Step 600
600 (this color)
#01828F
oklch(55.5% 0.095 207.1)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#124A51
oklch(37.7% 0.057 207.2)
-
Step 950
950
#0D2B2F
oklch(26.9% 0.036 207.2)
#01828F 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) | #757C90 | 0.091 |
| Deuteranopia (no green cones) | #65708F | 0.085 |
| Tritanopia (no blue cones) | #008986 | 0.029 |
| Achromatopsia (no color) | #767676 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01828F
#01828F
oklch(55.5% 0.095 207.1)
- #A35C54
#A35C54
oklch(55.4% 0.095 27.3)
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 #01828F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.023
- Ocean #017B92 ΔE 0.024
- Teal Blue #01889F ΔE 0.027
- Dark Cyan #008B8B ΔE 0.030
- Deep Aqua #08787F ΔE 0.034
- Bluegreen #017A79 ΔE 0.037
- Sea Blue #047495 ΔE 0.047
- Cerulean #457B9D ΔE 0.049
Use #01828F 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.