#1F615B
Closest named color: Dark Green Blue (#1F6357). oklch(45% 0.066 186.6), rgb(31, 97, 91).
Aa
White text reads best on this color (7.19:1).
About this color
#1F615B is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.066 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.011 away. White text reads best on it, at 7.19:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.91:1 |
| White text | 7.19:1 |
Values
| HEX | #1F615B |
| RGB | rgb(31, 97, 91) |
| HSL | hsl(175, 52%, 25%) |
| OKLCH | oklch(45% 0.066 186.6) |
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 #1F615B | 7.19:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #1F615B | 2.91:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #1F615B text on white | 7.19:1 | AAA | Lc 84.7 | Fine for body text |
| #1F615B text on black | 2.91:1 | Fails | Lc -17.3 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDB
oklch(88.5% 0.022 186)
-
Step 300
300
#A5C9C4
oklch(80.8% 0.039 186.1)
-
Step 400
400
#73AEA7
oklch(70.8% 0.062 186.5)
-
Step 500
500
#4A9991
oklch(63.1% 0.079 186.7)
-
Step 600
600
#25837B
oklch(55.5% 0.086 186.7)
-
Step 700
700
#156F68
oklch(49.1% 0.08 186.9)
-
Step 800
800 (this color)
#1F615B
oklch(45% 0.066 186.6)
-
Step 900
900
#1B4A46
oklch(37.6% 0.051 187.6)
-
Step 950
950
#112C29
oklch(27.1% 0.034 185.9)
#1F615B 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) | #5C5C5B | 0.070 |
| Deuteranopia (no green cones) | #52545C | 0.067 |
| Tritanopia (no blue cones) | #00635F | 0.012 |
| Achromatopsia (no color) | #575757 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F615B
#1F615B
oklch(45% 0.066 186.6)
- #74454F
#74454F
oklch(44.9% 0.066 6.3)
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 #1F615B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.011
- Petrol #005F6A ΔE 0.029
- Dark Aqua #05696B ΔE 0.030
- Deep Teal #00555A ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.055
- Dark Blue Green #005249 ΔE 0.056
- Pine #2B5D34 ΔE 0.057
- Dark Aquamarine #017371 ΔE 0.057
Use #1F615B 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.