#1F433D
Closest named color: Dark Teal (#014D4E). oklch(35.4% 0.043 181.6), rgb(31, 67, 61).
Aa
White text reads best on this color (10.88:1).
About this color
#1F433D is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.043 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.037 away. White text reads best on it, at 10.88:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 1.92:1 |
| White text | 10.88:1 |
Values
| HEX | #1F433D |
| RGB | rgb(31, 67, 61) |
| HSL | hsl(170, 37%, 19%) |
| OKLCH | oklch(35.4% 0.043 181.6) |
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 #1F433D | 10.88:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #1F433D | 1.92:1 | Fails | Lc 8.8 | Not readable |
| #1F433D text on white | 10.88:1 | AAA | Lc 95.1 | Preferred for body text |
| #1F433D text on black | 1.92:1 | Fails | Lc -7.5 | 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
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#ABC8C2
oklch(81% 0.032 181.6)
-
Step 400
400
#7DACA3
oklch(70.8% 0.052 181.6)
-
Step 500
500
#59978C
oklch(63.1% 0.067 181.5)
-
Step 600
600
#3D8176
oklch(55.6% 0.071 181.7)
-
Step 700
700
#2E6D63
oklch(49.1% 0.067 181.5)
-
Step 800
800
#285951
oklch(42.7% 0.055 181.5)
-
Step 900
900 (this color)
#1F433D
oklch(35.4% 0.043 181.6)
-
Step 950
950
#172B27
oklch(27.1% 0.027 180)
#1F433D 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) | #403F3D | 0.046 |
| Deuteranopia (no green cones) | #3A3B3E | 0.043 |
| Tritanopia (no blue cones) | #0E4441 | 0.013 |
| Achromatopsia (no color) | #3D3D3D | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F433D
#1F433D
oklch(35.4% 0.043 181.6)
- #4F323A
#4F323A
oklch(35.5% 0.044 1.6)
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 #1F433D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.037
- Charcoal #264653 ΔE 0.039
- Onyx #343A40 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.041
- Evergreen #05472A ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.045
- Midnight Green #073B4C ΔE 0.048
- Dark Blue Green #005249 ΔE 0.048
Use #1F433D 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.