#01737B
Closest named color: Deep Turquoise (#017374). oklch(50.6% 0.086 203.3), rgb(1, 115, 123).
Aa
White text reads best on this color (5.61:1).
About this color
#01737B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.086 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.012 away. White text reads best on it, at 5.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.73:1 |
| White text | 5.61:1 |
Values
| HEX | #01737B |
| RGB | rgb(1, 115, 123) |
| HSL | hsl(184, 98%, 24%) |
| OKLCH | oklch(50.6% 0.086 203.3) |
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 #01737B | 5.61:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #01737B | 3.73:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #01737B text on white | 5.61:1 | AA | Lc 77.5 | Fine for body text |
| #01737B text on black | 3.73:1 | AA large text | Lc -24.2 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C8DEE0
oklch(88.5% 0.024 203.4)
-
Step 300
300
#A2C9CD
oklch(80.9% 0.042 204.1)
-
Step 400
400
#6DADB3
oklch(70.7% 0.066 203.4)
-
Step 500
500
#3F99A0
oklch(63.2% 0.085 202.3)
-
Step 600
600
#0C838C
oklch(55.7% 0.093 203.5)
-
Step 700
700 (this color)
#01737B
oklch(50.6% 0.086 203.3)
-
Step 800
800
#055A60
oklch(42.7% 0.071 202.9)
-
Step 900
900
#144A4F
oklch(37.7% 0.055 204)
-
Step 950
950
#0E2B2E
oklch(26.9% 0.035 204.5)
#01737B 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) | #696E7C | 0.086 |
| Deuteranopia (no green cones) | #5A637B | 0.079 |
| Tritanopia (no blue cones) | #007875 | 0.021 |
| Achromatopsia (no color) | #676767 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01737B
#01737B
oklch(50.6% 0.086 203.3)
- #90504D
#90504D
oklch(50.6% 0.086 23.4)
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 #01737B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.012
- Deep Aqua #08787F ΔE 0.016
- Dark Aquamarine #017371 ΔE 0.016
- Bluegreen #017A79 ΔE 0.024
- Dark Aqua #05696B ΔE 0.035
- Ocean #017B92 ΔE 0.039
- Teal #008080 ΔE 0.040
- Sea Blue #047495 ΔE 0.042
Use #01737B 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.