#1F4E5C
Closest named color: Charcoal (#264653). oklch(39.8% 0.056 220.4), rgb(31, 78, 92).
Aa
White text reads best on this color (9.12:1).
About this color
#1F4E5C is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.056 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.026 away. White text reads best on it, at 9.12:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.30:1 |
| White text | 9.12:1 |
Values
| HEX | #1F4E5C |
| RGB | rgb(31, 78, 92) |
| HSL | hsl(194, 50%, 24%) |
| OKLCH | oklch(39.8% 0.056 220.4) |
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 #1F4E5C | 9.12:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #1F4E5C | 2.30:1 | Fails | Lc 13.2 | Not readable |
| #1F4E5C text on white | 9.12:1 | AAA | Lc 90.8 | Preferred for body text |
| #1F4E5C text on black | 2.30:1 | Fails | Lc -11.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#C9DDE4
oklch(88.5% 0.023 220.8)
-
Step 300
300
#A4C7D4
oklch(80.8% 0.042 222.4)
-
Step 400
400
#70ABBE
oklch(70.8% 0.067 220.2)
-
Step 500
500
#4695AD
oklch(63% 0.085 220.6)
-
Step 600
600
#1F7F99
oklch(55.5% 0.093 220.8)
-
Step 700
700
#0D6B83
oklch(49% 0.087 221.3)
-
Step 800
800
#12586A
oklch(42.8% 0.071 219.8)
-
Step 900
900 (this color)
#1F4E5C
oklch(39.8% 0.056 220.4)
-
Step 950
950
#102A32
oklch(26.8% 0.035 220.6)
#1F4E5C 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) | #454C5D | 0.046 |
| Deuteranopia (no green cones) | #3D455C | 0.043 |
| Tritanopia (no blue cones) | #005352 | 0.032 |
| Achromatopsia (no color) | #484848 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F4E5C
#1F4E5C
oklch(39.8% 0.056 220.4)
- #613D30
#613D30
oklch(39.9% 0.055 40.6)
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 #1F4E5C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.026
- Deep Teal #00555A ΔE 0.027
- Dark Slate Gray #2F4F4F ΔE 0.027
- Dark Teal #014D4E ΔE 0.031
- Dark Blue Green #005249 ΔE 0.044
- Petrol #005F6A ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.056
Use #1F4E5C 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.