#1F4A67
Closest named color: Dark Grey Blue (#29465B). oklch(39.3% 0.068 241.1), rgb(31, 74, 103).
Aa
White text reads best on this color (9.40:1).
About this color
#1F4A67 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.068 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.022 away. White text reads best on it, at 9.40:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.23:1 |
| White text | 9.40:1 |
Values
| HEX | #1F4A67 |
| RGB | rgb(31, 74, 103) |
| HSL | hsl(204, 54%, 26%) |
| OKLCH | oklch(39.3% 0.068 241.1) |
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 #1F4A67 | 9.40:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #1F4A67 | 2.23:1 | Fails | Lc 12.4 | Not readable |
| #1F4A67 text on white | 9.40:1 | AAA | Lc 91.5 | Preferred for body text |
| #1F4A67 text on black | 2.23:1 | Fails | Lc -10.8 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A4C6DF
oklch(81% 0.051 240.1)
-
Step 400
400
#71A7CF
oklch(70.6% 0.082 241.4)
-
Step 500
500
#4891C3
oklch(63.1% 0.105 241.1)
-
Step 600
600
#257AAF
oklch(55.5% 0.114 241.2)
-
Step 700
700
#156797
oklch(49.1% 0.106 241)
-
Step 800
800
#16547A
oklch(42.7% 0.088 240.9)
-
Step 900
900 (this color)
#1F4A67
oklch(39.3% 0.068 241.1)
-
Step 950
950
#11293A
oklch(27% 0.044 241.7)
#1F4A67 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) | #3D4A68 | 0.035 |
| Deuteranopia (no green cones) | #334366 | 0.029 |
| Tritanopia (no blue cones) | #005154 | 0.049 |
| Achromatopsia (no color) | #464646 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F4A67
#1F4A67
oklch(39.3% 0.068 241.1)
- #603C1C
#603C1C
oklch(39.2% 0.068 60.3)
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 #1F4A67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.022
- Charcoal #264653 ΔE 0.033
- Twilight Blue #0A437A ΔE 0.045
- Light Navy #155084 ΔE 0.048
- Deep Sea Blue #015482 ΔE 0.049
- Deep Teal #00555A ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.051
- Dark Teal #014D4E ΔE 0.052
Use #1F4A67 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.