#1F4668
Closest named color: Dark Grey Blue (#29465B). oklch(38.3% 0.073 247.4), rgb(31, 70, 104).
Aa
White text reads best on this color (9.83:1).
About this color
#1F4668 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.073 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.024 away. White text reads best on it, at 9.83:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.13:1 |
| White text | 9.83:1 |
Values
| HEX | #1F4668 |
| RGB | rgb(31, 70, 104) |
| HSL | hsl(208, 54%, 26%) |
| OKLCH | oklch(38.3% 0.073 247.4) |
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 #1F4668 | 9.83:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #1F4668 | 2.13:1 | Fails | Lc 11.3 | Not readable |
| #1F4668 text on white | 9.83:1 | AAA | Lc 92.6 | Preferred for body text |
| #1F4668 text on black | 2.13:1 | Fails | Lc -9.8 | 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
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCED
oklch(88.6% 0.03 246.6)
-
Step 300
300
#A5C5E3
oklch(81% 0.055 246.8)
-
Step 400
400
#73A6D5
oklch(70.7% 0.088 247.2)
-
Step 500
500
#4C8FCA
oklch(63.2% 0.113 247.2)
-
Step 600
600
#2C78B6
oklch(55.6% 0.121 247.1)
-
Step 700
700
#1E659D
oklch(49.2% 0.113 247)
-
Step 800
800
#1C527F
oklch(42.6% 0.094 247.5)
-
Step 900
900 (this color)
#1F4668
oklch(38.3% 0.073 247.4)
-
Step 950
950
#12283C
oklch(26.9% 0.047 247.8)
#1F4668 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) | #374769 | 0.029 |
| Deuteranopia (no green cones) | #2D4067 | 0.022 |
| Tritanopia (no blue cones) | #004E52 | 0.055 |
| Achromatopsia (no color) | #434343 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F4668
#1F4668
oklch(38.3% 0.073 247.4)
- #5D3B11
#5D3B11
oklch(38.4% 0.073 67.6)
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 #1F4668, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.024
- Twilight Blue #0A437A ΔE 0.036
- Charcoal #264653 ΔE 0.037
- Light Navy #155084 ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.052
- Marine Blue #01386A ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.057
Use #1F4668 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.