#1D5F71
Closest named color: Petrol (#005F6A). oklch(45.3% 0.071 219.8), rgb(29, 95, 113).
Aa
White text reads best on this color (7.17:1).
About this color
#1D5F71 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.071 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.018 away. White text reads best on it, at 7.17:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #1D5F71 |
| RGB | rgb(29, 95, 113) |
| HSL | hsl(193, 59%, 28%) |
| OKLCH | oklch(45.3% 0.071 219.8) |
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 #1D5F71 | 7.17:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #1D5F71 | 2.92:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #1D5F71 text on white | 7.17:1 | AAA | Lc 84.6 | Fine for body text |
| #1D5F71 text on black | 2.92:1 | Fails | Lc -17.4 | 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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#C9DDE4
oklch(88.5% 0.023 220.8)
-
Step 300
300
#A4C7D3
oklch(80.8% 0.041 220.6)
-
Step 400
400
#71ABBD
oklch(70.8% 0.066 219.4)
-
Step 500
500
#4795AD
oklch(63% 0.084 220.8)
-
Step 600
600
#217F98
oklch(55.5% 0.091 220.2)
-
Step 700
700
#0F6C82
oklch(49.2% 0.085 219.3)
-
Step 800
800 (this color)
#1D5F71
oklch(45.3% 0.071 219.8)
-
Step 900
900
#194856
oklch(37.6% 0.055 220.9)
-
Step 950
950
#102A32
oklch(26.8% 0.035 220.6)
#1D5F71 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) | #545C72 | 0.059 |
| Deuteranopia (no green cones) | #485471 | 0.052 |
| Tritanopia (no blue cones) | #006565 | 0.034 |
| Achromatopsia (no color) | #575757 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5F71
#1D5F71
oklch(45.3% 0.071 219.8)
- #774838
#774838
oklch(45.2% 0.07 39.5)
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 #1D5F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.018
- Dark Aqua #05696B ΔE 0.037
- YInMn Blue #415A77 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.048
- Deep Teal #00555A ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.052
- Denim #3B638C ΔE 0.054
Use #1D5F71 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.