#1F5FA7
Closest named color: Mid Blue (#276AB3). oklch(48.4% 0.132 254.3), rgb(31, 95, 167).
Aa
White text reads best on this color (6.45:1).
About this color
#1F5FA7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.132 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.036 away. White text reads best on it, at 6.45:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.25:1 |
| White text | 6.45:1 |
Values
| HEX | #1F5FA7 |
| RGB | rgb(31, 95, 167) |
| HSL | hsl(212, 69%, 39%) |
| OKLCH | oklch(48.4% 0.132 254.3) |
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 #1F5FA7 | 6.45:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #1F5FA7 | 3.25:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #1F5FA7 text on white | 6.45:1 | AA | Lc 81.6 | Fine for body text |
| #1F5FA7 text on black | 3.25:1 | AA large text | Lc -20.3 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CADBF1
oklch(88.6% 0.035 254.9)
-
Step 300
300
#A5C3EA
oklch(80.8% 0.064 255.1)
-
Step 400
400
#73A4DF
oklch(70.8% 0.102 253.7)
-
Step 500
500
#4E8BD6
oklch(63% 0.13 254.7)
-
Step 600
600
#2F74C4
oklch(55.6% 0.142 254.4)
-
Step 700
700 (this color)
#1F5FA7
oklch(48.4% 0.132 254.3)
-
Step 800
800
#1E4F89
oklch(42.6% 0.11 254.7)
-
Step 900
900
#1E426E
oklch(37.6% 0.086 254.8)
-
Step 950
950
#132740
oklch(27% 0.054 254.9)
#1F5FA7 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) | #3B65AA | 0.031 |
| Deuteranopia (no green cones) | #2159A6 | 0.017 |
| Tritanopia (no blue cones) | #00707B | 0.099 |
| Achromatopsia (no color) | #5E5E5E | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F5FA7
#1F5FA7
oklch(48.4% 0.132 254.3)
- #815500
#815500
oklch(48.6% 0.103 74.4)
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 #1F5FA7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.039
- Peacock Blue #016795 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.047
- Dusk Blue #26538D ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.050
- French Blue #436BAD ΔE 0.050
- Denim #3B638C ΔE 0.052
Use #1F5FA7 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.