#1F4E5F
Closest named color: Dark Grey Blue (#29465B). oklch(39.9% 0.058 225), rgb(31, 78, 95).
Aa
White text reads best on this color (9.07:1).
About this color
#1F4E5F is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.058 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.025 away. White text reads best on it, at 9.07:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #1F4E5F |
| RGB | rgb(31, 78, 95) |
| HSL | hsl(196, 51%, 25%) |
| OKLCH | oklch(39.9% 0.058 225) |
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 #1F4E5F | 9.07:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #1F4E5F | 2.31:1 | Fails | Lc 13.3 | Not readable |
| #1F4E5F text on white | 9.07:1 | AAA | Lc 90.7 | Preferred for body text |
| #1F4E5F text on black | 2.31:1 | Fails | Lc -11.6 | 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
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A3C7D6
oklch(80.8% 0.044 225.1)
-
Step 400
400
#70AAC1
oklch(70.7% 0.069 225)
-
Step 500
500
#4595B2
oklch(63.2% 0.089 224.7)
-
Step 600
600
#1E7F9E
oklch(55.7% 0.097 224.9)
-
Step 700
700
#0C6B87
oklch(49.2% 0.09 224.9)
-
Step 800
800
#11576E
oklch(42.7% 0.075 225.6)
-
Step 900
900 (this color)
#1F4E5F
oklch(39.9% 0.058 225)
-
Step 950
950
#102A34
oklch(27% 0.037 225.8)
#1F4E5F 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) | #454C60 | 0.046 |
| Deuteranopia (no green cones) | #3C465F | 0.039 |
| Tritanopia (no blue cones) | #005353 | 0.034 |
| Achromatopsia (no color) | #484848 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F4E5F
#1F4E5F
oklch(39.9% 0.058 225)
- #623D2D
#623D2D
oklch(40% 0.058 44)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #1F4E5F
These curated palettes and gradients contain exactly #1F4E5F. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.025
- Charcoal #264653 ΔE 0.028
- Deep Teal #00555A ΔE 0.030
- Dark Slate Gray #2F4F4F ΔE 0.031
- Dark Teal #014D4E ΔE 0.036
- Dark Blue Green #005249 ΔE 0.048
- Petrol #005F6A ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.058
Use #1F4E5F 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.