#01957D
Closest named color: Blue Green (#0F9B8E). oklch(59.8% 0.112 175.9), rgb(1, 149, 125).
Aa
Black text reads best on this color (5.59:1).
About this color
#01957D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.112 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Green (#0F9B8E), ΔE 0.028 away. Black text reads best on it, at 5.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Blue Green (#0F9B8E) |
| Black text | 5.59:1 |
| White text | 3.75:1 |
Values
| HEX | #01957D |
| RGB | rgb(1, 149, 125) |
| HSL | hsl(170, 99%, 29%) |
| OKLCH | oklch(59.8% 0.112 175.9) |
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 #01957D | 3.75:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #01957D | 5.59:1 | AA | Lc 39.6 | Non-text elements, placeholder text |
| #01957D text on white | 3.75:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #01957D text on black | 5.59:1 | AA | Lc -37.2 | 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 500.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E0EDE9
oklch(93.5% 0.015 175.7)
-
Step 200
200
#C5E0D8
oklch(88.5% 0.031 175.8)
-
Step 300
300
#9CCDBF
oklch(81% 0.055 175.4)
-
Step 400
400
#5FB39E
oklch(70.8% 0.088 175.4)
-
Step 500
500 (this color)
#01957D
oklch(59.8% 0.112 175.9)
-
Step 600
600
#008771
oklch(55.7% 0.104 175.8)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#004D40
oklch(37.6% 0.07 176.4)
-
Step 950
950
#052E25
oklch(27.1% 0.047 174.4)
#01957D 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) | #8F8B7C | 0.117 |
| Deuteranopia (no green cones) | #7F7F7F | 0.112 |
| Tritanopia (no blue cones) | #00978E | 0.025 |
| Achromatopsia (no color) | #848484 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01957D
#01957D
oklch(59.8% 0.112 175.9)
- #B36282
#B36282
oklch(59.9% 0.111 355.9)
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 #01957D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Green #0F9B8E ΔE 0.028
- Viridian #1E9167 ΔE 0.030
- Ocean Green #3D9973 ΔE 0.031
- Persian Green #2A9D8F ΔE 0.036
- Teal Green #0A9396 ΔE 0.041
- Dusty Teal #4C9085 ΔE 0.042
- Sea #3C9992 ΔE 0.042
- Dark Cyan #008B8B ΔE 0.043
Use #01957D 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.