#1B433B
Closest named color: Dark Teal (#014D4E). oklch(35.1% 0.047 178.4), rgb(27, 67, 59).
Aa
White text reads best on this color (10.97:1).
About this color
#1B433B is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.047 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.038 away. White text reads best on it, at 10.97:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 1.91:1 |
| White text | 10.97:1 |
Values
| HEX | #1B433B |
| RGB | rgb(27, 67, 59) |
| HSL | hsl(168, 43%, 18%) |
| OKLCH | oklch(35.1% 0.047 178.4) |
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 #1B433B | 10.97:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #1B433B | 1.91:1 | Fails | Lc 8.6 | Not readable |
| #1B433B text on white | 10.97:1 | AAA | Lc 95.3 | Preferred for body text |
| #1B433B text on black | 1.91:1 | Fails | Lc -7.4 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CCDED9
oklch(88.6% 0.02 177.4)
-
Step 300
300
#A9C9C1
oklch(81% 0.036 178.5)
-
Step 400
400
#7AADA1
oklch(70.8% 0.057 178.3)
-
Step 500
500
#55988A
oklch(63.1% 0.072 178.8)
-
Step 600
600
#368274
oklch(55.5% 0.078 179.3)
-
Step 700
700
#276E61
oklch(49% 0.073 178.8)
-
Step 800
800
#235A4F
oklch(42.7% 0.061 178)
-
Step 900
900 (this color)
#1B433B
oklch(35.1% 0.047 178.4)
-
Step 950
950
#152B26
oklch(26.9% 0.03 177.6)
#1B433B 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) | #403F3B | 0.050 |
| Deuteranopia (no green cones) | #3A3A3C | 0.049 |
| Tritanopia (no blue cones) | #054441 | 0.015 |
| Achromatopsia (no color) | #3C3C3C | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B433B
#1B433B
oklch(35.1% 0.047 178.4)
- #4F303A
#4F303A
oklch(35% 0.047 359)
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 #1B433B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.038
- Evergreen #05472A ΔE 0.039
- Charcoal #264653 ΔE 0.044
- Onyx #343A40 ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.046
- Dark Blue Green #005249 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.049
- Midnight Green #073B4C ΔE 0.049
Use #1B433B 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.