#1F424D
Closest named color: Charcoal (#264653). oklch(35.8% 0.045 220.8), rgb(31, 66, 77).
Aa
White text reads best on this color (10.79:1).
About this color
#1F424D is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.045 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.018 away. White text reads best on it, at 10.79:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.94:1 |
| White text | 10.79:1 |
Values
| HEX | #1F424D |
| RGB | rgb(31, 66, 77) |
| HSL | hsl(194, 43%, 21%) |
| OKLCH | oklch(35.8% 0.045 220.8) |
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 #1F424D | 10.79:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #1F424D | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #1F424D text on white | 10.79:1 | AAA | Lc 94.9 | Preferred for body text |
| #1F424D text on black | 1.94:1 | Fails | Lc -7.7 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CCDCE2
oklch(88.4% 0.019 222.2)
-
Step 300
300
#AAC6D0
oklch(80.9% 0.033 221.4)
-
Step 400
400
#7BA9B8
oklch(70.7% 0.054 220)
-
Step 500
500
#5893A7
oklch(63.1% 0.068 221.8)
-
Step 600
600
#3B7D92
oklch(55.5% 0.074 221.5)
-
Step 700
700
#2C6A7C
oklch(49.2% 0.069 220)
-
Step 800
800
#265665
oklch(42.6% 0.057 221.1)
-
Step 900
900 (this color)
#1F424D
oklch(35.8% 0.045 220.8)
-
Step 950
950
#162A30
oklch(27.1% 0.028 219)
#1F424D 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) | #3B404E | 0.037 |
| Deuteranopia (no green cones) | #353B4D | 0.034 |
| Tritanopia (no blue cones) | #004645 | 0.030 |
| Achromatopsia (no color) | #3D3D3D | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F424D
#1F424D
oklch(35.8% 0.045 220.8)
- #51352A
#51352A
oklch(35.9% 0.045 42.3)
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 #1F424D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.018
- Dark Blue Grey #1F3B4D ΔE 0.024
- Dark Grey Blue #29465B ΔE 0.029
- Midnight Green #073B4C ΔE 0.032
- Onyx #343A40 ΔE 0.036
- Dark Teal #014D4E ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.049
Use #1F424D 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.