#1E403F
Closest named color: Onyx (#343A40). oklch(34.6% 0.04 193), rgb(30, 64, 63).
Aa
White text reads best on this color (11.28:1).
About this color
#1E403F is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.040 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.034 away. White text reads best on it, at 11.28:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.86:1 |
| White text | 11.28:1 |
Values
| HEX | #1E403F |
| RGB | rgb(30, 64, 63) |
| HSL | hsl(178, 36%, 18%) |
| OKLCH | oklch(34.6% 0.04 193) |
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 #1E403F | 11.28:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #1E403F | 1.86:1 | Fails | Lc 7.9 | Not readable |
| #1E403F text on white | 11.28:1 | AAA | Lc 95.9 | Preferred for body text |
| #1E403F text on black | 1.86:1 | Fails | Lc 0.0 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#ABC7C6
oklch(80.9% 0.03 193.9)
-
Step 400
400
#7EAAA9
oklch(70.6% 0.047 194.4)
-
Step 500
500
#5B9593
oklch(63% 0.061 192.9)
-
Step 600
600
#3F807E
oklch(55.7% 0.067 192.8)
-
Step 700
700
#316C6A
oklch(49.2% 0.061 192.4)
-
Step 800
800
#295857
oklch(42.7% 0.051 193.6)
-
Step 900
900 (this color)
#1E403F
oklch(34.6% 0.04 193)
-
Step 950
950
#172A2A
oklch(26.9% 0.025 195.8)
#1E403F 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) | #3C3D3F | 0.041 |
| Deuteranopia (no green cones) | #37393F | 0.039 |
| Tritanopia (no blue cones) | #0B4240 | 0.015 |
| Achromatopsia (no color) | #3A3A3A | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E403F
#1E403F
oklch(34.6% 0.04 193)
- #4C3133
#4C3133
oklch(34.6% 0.04 14.5)
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 #1E403F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.035
- Midnight Green #073B4C ΔE 0.037
- Charcoal #264653 ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.042
- Dark Teal #014D4E ΔE 0.043
- Gunmetal #293241 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.052
Use #1E403F 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.