#1F604F
Closest named color: Dark Green Blue (#1F6357). oklch(44.3% 0.071 172.4), rgb(31, 96, 79).
Aa
White text reads best on this color (7.38:1).
About this color
#1F604F is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.071 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.014 away. White text reads best on it, at 7.38:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #1F604F |
| RGB | rgb(31, 96, 79) |
| HSL | hsl(164, 51%, 25%) |
| OKLCH | oklch(44.3% 0.071 172.4) |
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 #1F604F | 7.38:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #1F604F | 2.84:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #1F604F text on white | 7.38:1 | AAA | Lc 85.4 | Fine for body text |
| #1F604F text on black | 2.84:1 | Fails | Lc -16.6 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CBDED7
oklch(88.4% 0.022 171.7)
-
Step 300
300
#A6CABE
oklch(80.9% 0.042 173)
-
Step 400
400
#74AF9C
oklch(70.8% 0.068 172.1)
-
Step 500
500
#4C9A84
oklch(63% 0.085 172.8)
-
Step 600
600
#29856D
oklch(55.7% 0.093 171.9)
-
Step 700
700
#1A705B
oklch(49% 0.086 172.3)
-
Step 800
800 (this color)
#1F604F
oklch(44.3% 0.071 172.4)
-
Step 900
900
#1D4B3E
oklch(37.7% 0.055 172)
-
Step 950
950
#122C25
oklch(27% 0.035 173.9)
#1F604F 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) | #5D5A4E | 0.074 |
| Deuteranopia (no green cones) | #545350 | 0.071 |
| Tritanopia (no blue cones) | #00615B | 0.020 |
| Achromatopsia (no color) | #565656 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F604F
#1F604F
oklch(44.3% 0.071 172.4)
- #724257
#724257
oklch(44.3% 0.072 352.7)
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 #1F604F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.014
- Pine #2B5D34 ΔE 0.038
- Spruce #0A5F38 ΔE 0.039
- Dark Aqua #05696B ΔE 0.045
- Petrol #005F6A ΔE 0.046
- Deep Teal #00555A ΔE 0.049
- Dark Blue Green #005249 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.056
Use #1F604F 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.