#1F433F
Closest named color: Dark Teal (#014D4E). oklch(35.5% 0.042 186.1), rgb(31, 67, 63).
Aa
White text reads best on this color (10.86:1).
About this color
#1F433F is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.042 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.036 away. White text reads best on it, at 10.86:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 1.93:1 |
| White text | 10.86:1 |
Values
| HEX | #1F433F |
| RGB | rgb(31, 67, 63) |
| HSL | hsl(173, 37%, 19%) |
| OKLCH | oklch(35.5% 0.042 186.1) |
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 #1F433F | 10.86:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #1F433F | 1.93:1 | Fails | Lc 8.9 | Not readable |
| #1F433F text on white | 10.86:1 | AAA | Lc 95.0 | Preferred for body text |
| #1F433F text on black | 1.93:1 | Fails | Lc -7.6 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#ABC8C3
oklch(81% 0.032 184)
-
Step 400
400
#7DABA5
oklch(70.6% 0.05 186.1)
-
Step 500
500
#59978F
oklch(63.2% 0.066 185.2)
-
Step 600
600
#3C8179
oklch(55.6% 0.071 185.3)
-
Step 700
700
#2E6D66
oklch(49.2% 0.066 185.5)
-
Step 800
800
#275953
oklch(42.8% 0.055 185)
-
Step 900
900 (this color)
#1F433F
oklch(35.5% 0.042 186.1)
-
Step 950
950
#162B28
oklch(27% 0.028 184.2)
#1F433F 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) | #40403F | 0.045 |
| Deuteranopia (no green cones) | #3A3B3F | 0.043 |
| Tritanopia (no blue cones) | #0D4442 | 0.013 |
| Achromatopsia (no color) | #3D3D3D | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F433F
#1F433F
oklch(35.5% 0.042 186.1)
- #4F3238
#4F3238
oklch(35.4% 0.043 6)
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 #1F433F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.036
- Charcoal #264653 ΔE 0.036
- Onyx #343A40 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.043
- Midnight Green #073B4C ΔE 0.046
- Evergreen #05472A ΔE 0.047
- Dark Blue Green #005249 ΔE 0.048
Use #1F433F 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.