#1F6383
Closest named color: Peacock Blue (#016795). oklch(47.3% 0.084 233.2), rgb(31, 99, 131).
Aa
White text reads best on this color (6.62:1).
About this color
#1F6383 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.084 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.029 away. White text reads best on it, at 6.62:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.17:1 |
| White text | 6.62:1 |
Values
| HEX | #1F6383 |
| RGB | rgb(31, 99, 131) |
| HSL | hsl(199, 62%, 32%) |
| OKLCH | oklch(47.3% 0.084 233.2) |
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 #1F6383 | 6.62:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #1F6383 | 3.17:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #1F6383 text on white | 6.62:1 | AA | Lc 82.4 | Fine for body text |
| #1F6383 text on black | 3.17:1 | AA large text | Lc -19.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A8C6D7
oklch(81% 0.04 232.8)
-
Step 400
400
#78A8C3
oklch(70.7% 0.065 233.5)
-
Step 500
500
#5292B4
oklch(63.1% 0.083 233.4)
-
Step 600
600
#347CA0
oklch(55.7% 0.09 233.5)
-
Step 700
700 (this color)
#1F6383
oklch(47.3% 0.084 233.2)
-
Step 800
800
#21556F
oklch(42.7% 0.07 233.5)
-
Step 900
900
#21465A
oklch(37.6% 0.054 234.4)
-
Step 950
950
#142935
oklch(26.9% 0.035 235.2)
#1F6383 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) | #536285 | 0.053 |
| Deuteranopia (no green cones) | #465883 | 0.047 |
| Tritanopia (no blue cones) | #006C6E | 0.052 |
| Achromatopsia (no color) | #5D5D5D | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F6383
#1F6383
oklch(47.3% 0.084 233.2)
- #804D2B
#804D2B
oklch(47.2% 0.084 52.9)
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 #1F6383, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.029
- Denim #3B638C ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.031
- YInMn Blue #415A77 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.045
- Petrol #005F6A ΔE 0.045
- Ocean Blue #03719C ΔE 0.050
- Dark Aqua #05696B ΔE 0.051
Use #1F6383 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.