#1F4D41
Closest named color: Dark Blue Green (#005249). oklch(38.4% 0.055 173.7), rgb(31, 77, 65).
Aa
White text reads best on this color (9.56:1).
About this color
#1F4D41 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.055 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.020 away. White text reads best on it, at 9.56:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #1F4D41 |
| RGB | rgb(31, 77, 65) |
| HSL | hsl(164, 43%, 21%) |
| OKLCH | oklch(38.4% 0.055 173.7) |
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 #1F4D41 | 9.56:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #1F4D41 | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #1F4D41 text on white | 9.56:1 | AAA | Lc 92.0 | Preferred for body text |
| #1F4D41 text on black | 2.19:1 | Fails | Lc -10.4 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CBDED8
oklch(88.5% 0.022 174.9)
-
Step 300
300
#A6CABE
oklch(80.9% 0.042 173)
-
Step 400
400
#74AE9D
oklch(70.6% 0.066 174)
-
Step 500
500
#4C9A85
oklch(63% 0.084 173.7)
-
Step 600
600
#2A856F
oklch(55.7% 0.092 173.5)
-
Step 700
700
#1A705D
oklch(49.1% 0.085 174.1)
-
Step 800
800
#1A5B4C
oklch(42.6% 0.069 174.3)
-
Step 900
900 (this color)
#1F4D41
oklch(38.4% 0.055 173.7)
-
Step 950
950
#122C25
oklch(27% 0.035 173.9)
#1F4D41 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) | #4A4840 | 0.056 |
| Deuteranopia (no green cones) | #434342 | 0.054 |
| Tritanopia (no blue cones) | #074E49 | 0.017 |
| Achromatopsia (no color) | #454545 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F4D41
#1F4D41
oklch(38.4% 0.055 173.7)
- #5A3746
#5A3746
oklch(38.4% 0.054 352.7)
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 #1F4D41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.020
- Dark Teal #014D4E ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.031
- Deep Teal #00555A ΔE 0.042
- Evergreen #05472A ΔE 0.045
- Charcoal #264653 ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.051
- Pine Green #0A481E ΔE 0.057
Use #1F4D41 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.