#1F443D
Closest named color: Dark Teal (#014D4E). oklch(35.7% 0.045 179.8), rgb(31, 68, 61).
Aa
White text reads best on this color (10.75:1).
About this color
#1F443D is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.045 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.035 away. White text reads best on it, at 10.75:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #1F443D |
| RGB | rgb(31, 68, 61) |
| HSL | hsl(169, 37%, 19%) |
| OKLCH | oklch(35.7% 0.045 179.8) |
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 #1F443D | 10.75:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #1F443D | 1.95:1 | Fails | Lc 9.1 | Not readable |
| #1F443D text on white | 10.75:1 | AAA | Lc 94.8 | Preferred for body text |
| #1F443D text on black | 1.95:1 | Fails | Lc -7.8 | 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 900.
-
Step 50
50
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CDDDD9
oklch(88.4% 0.018 179.3)
-
Step 300
300
#AAC8C1
oklch(80.9% 0.034 179.7)
-
Step 400
400
#7CACA2
oklch(70.7% 0.053 180.3)
-
Step 500
500
#58978B
oklch(63% 0.068 180.4)
-
Step 600
600
#3B8275
oklch(55.7% 0.075 179.8)
-
Step 700
700
#2C6E62
oklch(49.2% 0.07 179.4)
-
Step 800
800
#265950
oklch(42.6% 0.057 180.3)
-
Step 900
900 (this color)
#1F443D
oklch(35.7% 0.045 179.8)
-
Step 950
950
#162B27
oklch(27% 0.028 180.5)
#1F443D 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) | #41403D | 0.047 |
| Deuteranopia (no green cones) | #3B3C3E | 0.044 |
| Tritanopia (no blue cones) | #0E4542 | 0.014 |
| Achromatopsia (no color) | #3E3E3E | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F443D
#1F443D
oklch(35.7% 0.045 179.8)
- #50323B
#50323B
oklch(35.6% 0.045 0.2)
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 #1F443D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.035
- Charcoal #264653 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.041
- Evergreen #05472A ΔE 0.042
- Onyx #343A40 ΔE 0.043
- Dark Blue Green #005249 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.048
Use #1F443D 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.