#1F5B4E
Closest named color: Dark Green Blue (#1F6357). oklch(42.8% 0.065 176.1), rgb(31, 91, 78).
Aa
White text reads best on this color (7.88:1).
About this color
#1F5B4E is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.065 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.026 away. White text reads best on it, at 7.88:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #1F5B4E |
| RGB | rgb(31, 91, 78) |
| HSL | hsl(167, 49%, 24%) |
| OKLCH | oklch(42.8% 0.065 176.1) |
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 #1F5B4E | 7.88:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #1F5B4E | 2.66:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #1F5B4E text on white | 7.88:1 | AAA | Lc 87.1 | Fine for body text |
| #1F5B4E text on black | 2.66:1 | Fails | Lc -15.0 | Not readable |
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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CBDED8
oklch(88.5% 0.022 174.9)
-
Step 300
300
#A8C9C0
oklch(80.9% 0.038 177)
-
Step 400
400
#77AD9F
oklch(70.6% 0.061 176.5)
-
Step 500
500
#519988
oklch(63.1% 0.078 176.5)
-
Step 600
600
#308371
oklch(55.4% 0.085 176.1)
-
Step 700
700
#226F5F
oklch(49.1% 0.079 176.2)
-
Step 800
800 (this color)
#1F5B4E
oklch(42.8% 0.065 176.1)
-
Step 900
900
#204A41
oklch(37.6% 0.05 177.5)
-
Step 950
950
#142C26
oklch(27.1% 0.032 175.7)
#1F5B4E 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) | #58554D | 0.069 |
| Deuteranopia (no green cones) | #4F4F4F | 0.065 |
| Tritanopia (no blue cones) | #005C57 | 0.017 |
| Achromatopsia (no color) | #515151 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F5B4E
#1F5B4E
oklch(42.8% 0.065 176.1)
- #6C4050
#6C4050
oklch(42.9% 0.065 356.9)
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 #1F5B4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.026
- Deep Teal #00555A ΔE 0.036
- Dark Blue Green #005249 ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.041
- Pine #2B5D34 ΔE 0.042
- Spruce #0A5F38 ΔE 0.043
- Petrol #005F6A ΔE 0.044
- Dark Teal #014D4E ΔE 0.052
Use #1F5B4E 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.