#1F699C
Closest named color: Peacock Blue (#016795). oklch(50.2% 0.108 243.7), rgb(31, 105, 156).
Aa
White text reads best on this color (5.90:1).
About this color
#1F699C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.108 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.018 away. White text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #1F699C |
| RGB | rgb(31, 105, 156) |
| HSL | hsl(204, 67%, 37%) |
| OKLCH | oklch(50.2% 0.108 243.7) |
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 #1F699C | 5.90:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #1F699C | 3.55:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #1F699C text on white | 5.90:1 | AA | Lc 79.1 | Fine for body text |
| #1F699C text on black | 3.55:1 | AA large text | Lc -22.7 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEB
oklch(88.6% 0.028 243.1)
-
Step 300
300
#A5C5E0
oklch(80.9% 0.052 243.9)
-
Step 400
400
#73A7D1
oklch(70.8% 0.083 243.7)
-
Step 500
500
#4B90C5
oklch(63.1% 0.106 243.9)
-
Step 600
600
#2A79B2
oklch(55.6% 0.116 244.3)
-
Step 700
700 (this color)
#1F699C
oklch(50.2% 0.108 243.7)
-
Step 800
800
#1A537C
oklch(42.6% 0.089 244.3)
-
Step 900
900
#1C4564
oklch(37.7% 0.07 244.2)
-
Step 950
950
#12293A
oklch(27.1% 0.043 242.6)
#1F699C 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) | #516B9E | 0.048 |
| Deuteranopia (no green cones) | #405F9B | 0.036 |
| Tritanopia (no blue cones) | #00757B | 0.074 |
| Achromatopsia (no color) | #646464 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F699C
#1F699C
oklch(50.2% 0.108 243.7)
- #8D540F
#8D540F
oklch(50.1% 0.107 63.9)
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 #1F699C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.018
- Ocean Blue #03719C ΔE 0.024
- Denim #3B638C ΔE 0.032
- Muted Blue #3B719F ΔE 0.034
- Sea Blue #047495 ΔE 0.038
- Mid Blue #276AB3 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.041
- Flat Blue #3C73A8 ΔE 0.042
Use #1F699C 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.