#1D5E73
Closest named color: Petrol (#005F6A). oklch(45.1% 0.072 223.6), rgb(29, 94, 115).
Aa
White text reads best on this color (7.23:1).
About this color
#1D5E73 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.072 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.021 away. White text reads best on it, at 7.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.90:1 |
| White text | 7.23:1 |
Values
| HEX | #1D5E73 |
| RGB | rgb(29, 94, 115) |
| HSL | hsl(195, 60%, 28%) |
| OKLCH | oklch(45.1% 0.072 223.6) |
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 #1D5E73 | 7.23:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #1D5E73 | 2.90:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #1D5E73 text on white | 7.23:1 | AAA | Lc 84.9 | Fine for body text |
| #1D5E73 text on black | 2.90:1 | Fails | Lc -17.1 | 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
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A4C7D5
oklch(80.9% 0.042 224.1)
-
Step 400
400
#71AAC0
oklch(70.7% 0.068 224.3)
-
Step 500
500
#4795B0
oklch(63.2% 0.086 223.5)
-
Step 600
600
#227F9C
oklch(55.7% 0.094 223.7)
-
Step 700
700
#116B85
oklch(49.1% 0.087 223.5)
-
Step 800
800 (this color)
#1D5E73
oklch(45.1% 0.072 223.6)
-
Step 900
900
#1A4858
oklch(37.8% 0.056 224.3)
-
Step 950
950
#112A33
oklch(26.9% 0.035 224)
#1D5E73 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) | #525C74 | 0.057 |
| Deuteranopia (no green cones) | #465373 | 0.050 |
| Tritanopia (no blue cones) | #006465 | 0.037 |
| Achromatopsia (no color) | #575757 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5E73
#1D5E73
oklch(45.1% 0.072 223.6)
- #774834
#774834
oklch(45.2% 0.072 43.6)
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 #1D5E73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.021
- YInMn Blue #415A77 ΔE 0.037
- Dark Aqua #05696B ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.047
- Deep Teal #00555A ΔE 0.050
- Denim #3B638C ΔE 0.052
- Dark Green Blue #1F6357 ΔE 0.054
Use #1D5E73 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.