#1F4352
Closest named color: Charcoal (#264653). oklch(36.3% 0.049 227.6), rgb(31, 67, 82).
Aa
White text reads best on this color (10.59:1).
About this color
#1F4352 is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.049 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.013 away. White text reads best on it, at 10.59:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.98:1 |
| White text | 10.59:1 |
Values
| HEX | #1F4352 |
| RGB | rgb(31, 67, 82) |
| HSL | hsl(198, 45%, 22%) |
| OKLCH | oklch(36.3% 0.049 227.6) |
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 #1F4352 | 10.59:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #1F4352 | 1.98:1 | Fails | Lc 9.5 | Not readable |
| #1F4352 text on white | 10.59:1 | AAA | Lc 94.4 | Preferred for body text |
| #1F4352 text on black | 1.98:1 | Fails | Lc -8.2 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE4
oklch(88.5% 0.02 229.1)
-
Step 300
300
#A9C6D3
oklch(80.9% 0.036 226.7)
-
Step 400
400
#7AA8BD
oklch(70.6% 0.058 227.9)
-
Step 500
500
#5593AD
oklch(63.2% 0.075 227)
-
Step 600
600
#387D99
oklch(55.7% 0.081 227.6)
-
Step 700
700
#296982
oklch(49.1% 0.076 227.3)
-
Step 800
800
#24566A
oklch(42.8% 0.063 227.3)
-
Step 900
900 (this color)
#1F4352
oklch(36.3% 0.049 227.6)
-
Step 950
950
#152932
oklch(26.8% 0.031 228.6)
#1F4352 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) | #3B4253 | 0.036 |
| Deuteranopia (no green cones) | #343C52 | 0.033 |
| Tritanopia (no blue cones) | #004748 | 0.032 |
| Achromatopsia (no color) | #3F3F3F | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F4352
#1F4352
oklch(36.3% 0.049 227.6)
- #533627
#533627
oklch(36.3% 0.049 48.1)
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 #1F4352, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.013
- Dark Grey Blue #29465B ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.026
- Midnight Green #073B4C ΔE 0.035
- Dark Teal #014D4E ΔE 0.039
- Onyx #343A40 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.048
Use #1F4352 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.