#1F496B
Closest named color: Dark Grey Blue (#29465B). oklch(39.3% 0.074 245.8), rgb(31, 73, 107).
Aa
White text reads best on this color (9.44:1).
About this color
#1F496B is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.074 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.027 away. White text reads best on it, at 9.44:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.22:1 |
| White text | 9.44:1 |
Values
| HEX | #1F496B |
| RGB | rgb(31, 73, 107) |
| HSL | hsl(207, 55%, 27%) |
| OKLCH | oklch(39.3% 0.074 245.8) |
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 #1F496B | 9.44:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #1F496B | 2.22:1 | Fails | Lc 12.3 | Not readable |
| #1F496B text on white | 9.44:1 | AAA | Lc 91.6 | Preferred for body text |
| #1F496B text on black | 2.22:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A4C5E3
oklch(80.9% 0.055 246)
-
Step 400
400
#71A6D5
oklch(70.6% 0.089 246.2)
-
Step 500
500
#488FCA
oklch(63% 0.114 246.1)
-
Step 600
600
#2579B7
oklch(55.7% 0.124 245.5)
-
Step 700
700
#16659D
oklch(49% 0.115 245.6)
-
Step 800
800
#175380
oklch(42.8% 0.096 245.8)
-
Step 900
900 (this color)
#1F496B
oklch(39.3% 0.074 245.8)
-
Step 950
950
#11283C
oklch(26.9% 0.047 246.9)
#1F496B 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) | #3A4A6C | 0.032 |
| Deuteranopia (no green cones) | #2F436A | 0.023 |
| Tritanopia (no blue cones) | #005155 | 0.055 |
| Achromatopsia (no color) | #464646 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F496B
#1F496B
oklch(39.3% 0.074 245.8)
- #603D13
#603D13
oklch(39.3% 0.074 67)
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 #1F496B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.027
- Twilight Blue #0A437A ΔE 0.038
- Charcoal #264653 ΔE 0.040
- Light Navy #155084 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.045
- Deep Teal #00555A ΔE 0.057
- Dark Slate Gray #2F4F4F ΔE 0.059
- Dark Teal #014D4E ΔE 0.060
Use #1F496B 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.