#1F5D64
Closest named color: Petrol (#005F6A). oklch(44.2% 0.063 205.7), rgb(31, 93, 100).
Aa
White text reads best on this color (7.47:1).
About this color
#1F5D64 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.063 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.014 away. White text reads best on it, at 7.47:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.80:1 |
| White text | 7.47:1 |
Values
| HEX | #1F5D64 |
| RGB | rgb(31, 93, 100) |
| HSL | hsl(186, 53%, 26%) |
| OKLCH | oklch(44.2% 0.063 205.7) |
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 #1F5D64 | 7.47:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #1F5D64 | 2.80:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #1F5D64 text on white | 7.47:1 | AAA | Lc 85.7 | Fine for body text |
| #1F5D64 text on black | 2.80:1 | Fails | Lc -16.3 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADDE0
oklch(88.4% 0.021 208.1)
-
Step 300
300
#A6C8CC
oklch(80.9% 0.037 205.2)
-
Step 400
400
#74ACB2
oklch(70.8% 0.059 204.4)
-
Step 500
500
#4C97A0
oklch(63.2% 0.075 205.7)
-
Step 600
600
#2A818B
oklch(55.7% 0.082 206.1)
-
Step 700
700
#1A6D76
oklch(49.2% 0.076 205.9)
-
Step 800
800 (this color)
#1F5D64
oklch(44.2% 0.063 205.7)
-
Step 900
900
#1D494E
oklch(37.7% 0.049 205.4)
-
Step 950
950
#122B2E
oklch(27.1% 0.031 205.7)
#1F5D64 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) | #555964 | 0.061 |
| Deuteranopia (no green cones) | #4B5264 | 0.056 |
| Tritanopia (no blue cones) | #00615F | 0.021 |
| Achromatopsia (no color) | #555555 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F5D64
#1F5D64
oklch(44.2% 0.063 205.7)
- #724541
#724541
oklch(44.2% 0.063 25.4)
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 #1F5D64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.014
- Dark Green Blue #1F6357 ΔE 0.034
- Deep Teal #00555A ΔE 0.034
- Dark Aqua #05696B ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.047
- YInMn Blue #415A77 ΔE 0.051
- Dark Blue Green #005249 ΔE 0.056
- Dark Teal #014D4E ΔE 0.062
Use #1F5D64 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.